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this can fill your mqueue partition -- this is a possible
denial-of-service attack.
Don't reject all numeric local user names unless HESIOD is
defined. It turns out that Posix allows all-numeric
user names. Fix from Tony Sanders of BSDI.
Add service switch support. If the local OS has a service
switch (e.g., /etc/nsswitch.conf on Solaris or /etc/svc.conf
on DEC systems) that will be used; otherwise, it falls back
to using a local mechanism based on the ServiceSwitchFile
option (default: /etc/service.switch). For example, if the
service switch lists "files" and "nis" for the aliases
service, that will be the default lookup order. the "files"
("local" on DEC) service type expands to any alias files
you listed in the configuration file, even if they aren't
actually file lookups.
Option I (NameServerOptions) no longer sets the "UseNameServer"
variable which tells whether or not DNS should be considered
canonical. This is now determined based on whether or not
"dns" is in the service list for "hosts".
Add preliminary support for the ESMTP "DSN" extension (Delivery
Status Notifications). DSN notifications override
Return-Receipt-To: headers, which are bogus anyhow --
support for them has been removed.
Add T=mts-name-type/address-type/diagnostic-type keyletter to mailer
definitions to define the types used in DSN returns for
MTA names, addresses, and diagnostics respectively.
Extend heuristic to force running in ESMTP mode to look for the
five-character string "ESMTP" anywhere in the 220 greeting
message (not just the second line). This is to provide
better compatibility with other ESMTP servers.
Print sequence number of job when running the queue so you can
easily see how much progress you have made. Suggested
by Peter Wemm of DIALix.
Map newlines to spaces in logged message-ids; some versions of
syslog truncate the rest of the line after newlines.
Suggested by Fletcher Mattox of U. Texas.
Move up forking for job runs so that if a message is split into
multiple envelopes you don't get "fork storms" -- this
also improves the connection cache utilization.
Accept "<<>>", "<<<>>>", and so forth as equivalent to "<>" for
the purposes of refusing to send error returns. Suggested
by Motonori Nakamura of Ritsumeikan University.
Relax rules on when a file can be written when referenced from
the aliases file: use the default uid/gid instead of the
real uid/gid. This allows you to create a file owned by
and writable only by the default uid/gid that will work
all the time (without having the setuid bit set). Change
suggested by Shau-Ping Lo and Andrew Cheng of Sun
Microsystems.
Add "DialDelay" option (no short name) to provide an "extra"
delay for dial on demand systems. If this is non-zero
and a connect fails, sendmail will wait this long and
then try again. If it takes longer than the kernel
timeout interval to establish the connection, this
option can give the network software time to establish
the link. The default units are seconds.
Move logging of sender information to be as early as possible;
previously, it could be delayed a while for SMTP mail
sent to aliases. Suggested by Brad Knowles of the
Defense Information Systems Agency.
Call res_init() before setting RES_DEBUG; this is required by
BIND 4.9.3, or so I'm told. From Douglas Anderson of
the National Computer Security Center.
Add xdelay= field in logs -- this is a transaction delay, telling
you how long it took to deliver to this address on the
last try. It is intended to be used for sorting mailing
lists to favor "quick" addresses. Provided for use by
the mailprio scripts (see below).
If a map cannot be opened, and that map is non-optional, and
an address requires that map for resolution, queue the
map instead of bouncing it. This involves creating a
pseudo-class of maps called "bogus-map" -- if a required
map cannot be opened, the class is changed to bogus-map;
all queries against bogus-map return "tempfail". The
bogus-map class is not directly accessible. A sample
implementation was donated by Jem Taylor of Glasgow
University Computing Service.
Fix a possible core dump when mailing to a program that talks
SMTP on its standard input. Fix from Keith Moore of
the University of Kentucky.
Make it possible to resolve filenames to $#local $: @ /filename;
previously, the "@" would cause it to not be recognized
as a file. Problem noted by Brian Hill of U.C. Davis.
Accept a -1 signal to re-exec the daemon. This only works if
argv[0] is a full path to sendmail.
Fix bug in "addr=..." field in O option on little-endian machines
-- the network number wasn't being converted to network
byte order. Patch from Kurt Lidl of Pix Technologies
Corporation.
Pre-initialize the resolver early on; this is to avoid a bug with
BIND 4.9.3 that can cause the _res.retry field to get
reset to zero, causing all name server lookups to time
out. Fix from Matt Day of Artisoft.
Restore T line (trusted users) in config file -- but instead of
locking out the -f flag, they just tell whether or not
an X-Authentication-Warning: will be added. This really
just creates new entries in class 't', so "Ft/file/name"
can be used to read trusted user names from a file.
Trusted users are also allowed to execute programs even
if they have a shell that isn't in /etc/shells.
Improve NEWDB alias file rebuilding so it will create them
properly if they do not already exist. This had been
a MAYBENEXTRELEASE feature in 8.6.9.
Check for @:@ entry in NIS maps before starting up to avoid
(but not prevent, sigh) race conditions. This ought to
be handled properly in ypserv, but isn't. Suggested by
Michael Beirne of Motorola.
Refuse connections if there isn't enough space on the filesystem
holding the queue. Contributed by Robert Dana of Wolf
Communications.
Skip checking for directory permissions in the path to a file
when checking for file permissions iff setreuid()
succeeded -- it is unnecessary in that case. This avoids
significant performance problems when looking for .forward
files. Based on a suggestion by Win Bent of USC.
Allow symbolic ruleset names. Syntax can be "Sname" to get an
arbitrary ruleset number assigned or "Sname = integer"
to assign a specific ruleset number. Reference is
$>name_or_number. Names can be composed of alphas, digits,
underscore, or hyphen (first character must be non-numeric).
Allow -o flag on AliasFile lines to make the alias file optional.
From Bryan Costales of ICSI.
Add NoRecipientAction option to handle the case where there is
no legal recipient header in the message. It can take
on values:
None Leave the message as is. The
message will be passed on even
though it is in technically
illegal syntax.
Add-To Add a To: header with any
recipients that it can find from
the envelope. This risks exposing
Bcc: recipients.
Add-Apparently-To Add an Apparently-To: header. This
has almost no redeeming social value,
and is provided only for back
compatibility.
Add-To-Undisclosed Add a header reading
To: undisclosed-recipients:;
which will have the effect of
making the message legal without
exposing Bcc: recipients.
Add-Bcc To add an empty Bcc: header.
There is a chance that mailers down
the line will delete this header,
which could cause exposure of Bcc:
recipients.
The default is NoRecipientAction=None.
Truncate (rather than delete) Bcc: lines in the header. This
should prevent later sendmails (at least, those that don't
themselves delete Bcc:) from considering this message to
be non-conforming -- although it does imply that non-blind
recipients can see that a Bcc: was sent, albeit not to whom.
Add SafeFileEnvironment option. If declared, files named as delivery
targets must be regular files in addition to the regular
checks. Also, if the option is non-null then it is used as
the name of a directory that is used as a chroot(2)
environment for the delivery; the file names listed in an
alias or forward should include the name of this root.
For example, if you run with
O SafeFileEnvironment=/arch
then aliases should reference "/arch/rest/of/path". If a
value is given, sendmail also won't try to save to
/usr/tmp/dead.letter (instead it just leaves the job in the
queue as Qfxxxxxx). Inspired by *Hobbit*'s sendmail patch kit.
Support -A flag for alias files; this will comma concatenate like
entries. For example, given the aliases:
list: member1
list: member2
and an alias file declared as:
OAhash:-A /etc/aliases
the final alias inserted will be "list: member1,member2";
without -A you will get an error on the second and subsequent
alias for "list". Contributed by Bryan Costales of ICSI.
Line-buffer transcript file. Suggested by Liudvikas Bukys.
Fix a problem that could cause very long addresses to core dump in
some special circumstances. Problem pointed out by Allan
Johannesen.
(Internal change.) Change interface to expand() (macro expansion)
to be simpler and more consistent.
Delete check for funny qf file names. This didn't really give
any extra security and caused some people some problems.
(If you -really- want this, define PICKY_QF_NAME_CHECK
at compile time.) Suggested by Kyle Jones of UUNET.
(Internal change.) Change EF_NORETURN to EF_NO_BODY_RETN and
merge with DSN code; this is simpler and more consistent.
This may affect some people who have written their own
checkcompat() routine.
(Internal change.) Eliminate `D' line in qf file. The df file
is now assumed to be the same name as the qf file (with
the `q' changed to a `d', of course).
Avoid forking for delivery if all recipient mailers are marked as
"expensive" -- this can be a major cost on some systems.
Essentially, this forces sendmail into "queue only" mode
if all it is going to do is queue anyway.
Avoid sending a null message in some rather unusual circumstances
(specifically, the RCPT command returns a temporary
failure but the connection is lost before the DATA
command). Fix from Scott Hammond of Secure Computing
Corporation.
Change makesendmail to use a somewhat more rational naming scheme:
Makefiles and obj directories are named $os.$rel.$arch,
where $os is the operating system (e.g., SunOS), $rel is
the release number (e.g., 5.3), and $arch is the machine
architecture (e.g., sun4). Any of these can be omitted,
and anything after the first dot in a release number can
be replaced with "x" (e.g., SunOS.4.x.sun4). The previous
version used $os.$arch.$rel and was rather less general.
Change makesendmail to do a "make depend" in the target directory
when it is being created. This involves adding an empty
"depend:" entry in most Makefiles.
Ignore IDENT return value if the OSTYPE field returns "OTHER",
as indicated by RFC 1413. Pointed out by Kari Hurtta
of the Finnish Meteorological Institute.
Fix problem that could cause multiple responses to DATA command
on header syntax errors (e.g., lines beginning with colons).
Problem noted by Jens Thomassen of the University of Oslo.
Don't let null bytes in headers cause truncation of the rest of
the header.
Log Authentication-Warning:s. Suggested by Motonori Nakamura.
Increase timeouts on message data puts to allow time for receivers
to canonify addresses in headers on the fly. This is still
a rather ugly heuristic. From Motonori Nakamura.
Add "HasWildcardMX" suboption to ResolverOptions; if set, MX
records are not used when canonifying names, and when MX
lookups are done for addressing they must be fully
qualified. This is useful if you have a wildcard MX record,
although it may cause other problems. In general, don't use
wildcard MX records. Patch from Motonori Nakamura.
Eliminate default two-line SMTP greeting message. Instead of
adding an extra "ESMTP spoken here" line, the word "ESMTP"
is added between the first and second word of the first
line of the greeting message (i.e., immediately after the
host name). This eliminates the need for the BROKEN_SMTP_PEERS
compile flag. Old sendmails won't see the ESMTP, but that's
acceptable because SIZE was the only useful extension that
old sendmails understand.
Avoid gethostbyname calls on UNIX domain sockets during SIGUSR1
invoked state dumps. From Masaharu Onishi.
Allow on-line comments in .forward and :include: files; they are
introduced by the string "<LWSP>#@#<LWSP>", where <LWSP>
is a space or a tab. This is intended for native
representation of non-ASCII sets such as Japanese, where
existing encodings would be unreadable or would lose
data -- for example,
<motonori@cs.ritsumei.ac.jp> NAKAMURA Motonori
(romanized/less information)
<motonori@cs.ritsumei.ac.jp> =?ISO-2022-JP?B?GyRCQ2ZCPBsoQg==?=
=?ISO-2022-JP?B?GyRCQUdFNRsoQg==?=
(with MIME encoding, not human readable)
<motonori@cs.ritsumei.ac.jp> #@# ^[$BCfB<^[(B ^[$BAGE5^[(B
(native encoding with ISO-2022-JP)
The last form is human readable in the Japanese environment.
Based on a fix from (surprise!) Motonori Nakamura.
Don't make SMTP error returns on MAIL FROM: line be "sticky" for all
messages to that host; these are most frequently associated
with addresses rather than the host, with the exception of
421 (service shutting down). The effect was to cause queues
to sometimes take an excessive time to flush. Reported by
Robert Sargent of Southern Geographics Technologies and
Eric Prestemon of American University.
Add Nice=N mailer option to set the niceness at which a mailer will
run. This is actually a relative niceness (that is, an
increment on the background value).
Log queue runs that are skipped due to high loads. They are logged
at LOG_INFO priority iff the log level is > 8. Contributed
by Bruce Nagel of Data General.
Allow the error mailer to accept a DSN-style error status code
instead of an sysexits status code in the host part.
Anything with a dot will be interpreted as a DSN-style code.
Add new mailer flag: F=3 will tell translations to Quoted-Printable
to encode characters that might be munged by an EBCDIC system
in addition to the set required by RFC 1521. The additional
characters are !, ", #, $, @, [, , ], ^, `, {, |, }, and ~.
(Think of "IBM 360" as the mnemonic for this flag.)
Change check for mailing to files to look for a pathname of [FILE]
rather than looking for the mailer named *file*. The mapping
of leading slashes still goes to the *file* mailer. This
allows you to implement the *file* mailer as a separate
program, for example, to insert a Content-Length: header
or do special security policy. However, note that the usual
initial checking for the file permissions is still done, and
the program in question needs to be very careful about how
it does the file write to avoid security problems.
Be able to read ~root/.forward even if the path isn't accessible to
regular users. This is disrecommended because sendmail
sometimes does not run as root (e.g., when an unsafe option
is specified on the command line), but should otherwise be
safe because .forward files must be owned by the user for
whom mail is being forwarded, and cannot be a symbolic link.
Suggested by Forrest Aldrich of Wang Laboratories.
Add new "HostsFile" option that is the pathname to the /etc/hosts
file. This is used for canonifying hostnames when the
service type is "files".
Implement programs on F (read class from file) line. The syntax is
Fc|/path/to/program to read the output from the program
into class "c".
Probe the network interfaces to find alternate names for this
host. Requires the SIOCGIFCONF ioctl call. Code
contributed by SunSoft.
Add "E" configuration line to set or propagate environment
variables into children. "E<envar>" will propagate
the named variable from the environment when sendmail
was invoked into any children it calls; "E<envar>=<value>"
sets the named variable to the indicated value. Any
variables not explicitly named will not be in the child
environment. However, sendmail still forces an
"AGENT=sendmail" environment variable, in part to enforce
at least one environment variable, since many programs and
libraries die horribly if this is not guaranteed.
Change heuristic for rebuilding both NEWDB and NDBM versions of
alias databases -- new algorithm looks for the substring
"/yp/" in the file name. This is more portable and involves
less overhead. Suggested by Motonori Nakamura.
Dynamically allocate the queue work list so that you don't lose
jobs in large queue runs. The old QUEUESIZE compile parameter
is replaced by QUEUESEGSIZE (the unit of allocation, which
should not need to be changed) and the MaxQueueRunSize option,
which is the absolute maximum number of jobs that will ever
be handled in a single queue run. Based on code contributed
by Brian Coan of the Institute for Global Communications.
Log message when a message is dropped because it exceeds the maximum
message size. Suggested by Leo Bicknell of Virginia Tech.
Allow trusted users (those on a T line or in $=t) to use -bs without
an X-Authentication-Warning: added. Suggested by Mark Thomas
of Mark G. Thomas Consulting.
Announce state of compile flags on -d0.1 (-d0.10 throws in the
OS-dependent defines). The old semantic of -d0.1 to not
run the daemon in background has been moved to -d99.100,
and the old 52.5 flag (to avoid disconnect() from closing
all output files) has been moved to 52.100. This makes
things more consistent (flags below .100 don't change
semantics) and separates out the backgrounding so that
it doesn't happen automatically on other unrelated debugging
flags.
If -t is used but no addresses are found in the header, give an
error message rather than just doing nothing. Fix from
Motonori Nakamura.
On systems (like SunOS) where the effective gid is not necessarily
included in the group list returned by getgroups(), the
`restrictmailq' option could sometimes cause an authorized
user to not be able to use `mailq'. Fix from Charles Hannum
of MIT.
Allow symbolic service names for [IPC] mailers. Suggested by
Gerry Magennis of Logica International.
Add DontExpandCnames option to prevent $[ ... $] from expanding CNAMEs
when running DNS. For example, if the name FTP.Foo.ORG is
a CNAME for Cruft.Foo.ORG, then when sitting on a machine in
the Foo.ORG domain a lookup of "FTP" returns "Cruft.Foo.ORG"
if this option is not set, or "FTP.Foo.ORG" if it is set.
This is technically illegal under RFC 822 and 1123, but the
IETF is moving toward legalizing it. Note that turning on
this option is not sufficient to guarantee that a downstream
neighbor won't rewrite the address for you.
Add "-m" flag to makesendmail script -- this tells you what object
directory and Makefile it will use, but doesn't actually do
the make.
Do some additional checking on the contents of the qf file to try
to detect attacks against the qf file. In particular,
abort on any line beginning "From ", and add an "end of
file" line -- any data after that line is prohibited.
Always use /etc/sendmail.cf, regardless of the arbitrary vendor
choices. This can be overridden in the Makefile by using
either -DUSE_VENDOR_CF_PATH to get the vendor location
(to the extent that we know it) or by defining
_PATH_SENDMAILCF (which is a "hard override"). This allows
sendmail 8 to have more consistent installation instructions.
Allow macros on `K' line in config file. Suggested by Andrew Chang
of Sun Microsystems.
Improved symbol table hash function from Eric Wassenaar. This one
is at least 50% faster.
Fix problem that didn't notice that timeout on file open was a
transient error. Fix from Larry Parmelee of Cornell
University.
Allow comments (lines beginning with a `#') in files read for
classes. Suggested by Motonori Nakamura.
Make SIGINT (usually ^C) in test mode return to the prompt instead
of dropping out entirely. This makes testing some of the
name server lookups easier to deal with when there are
hung servers. From Motonori Nakamura.
Add new ${opMode} macro that is set to the current operation mode
(e.g., `s' for -bs, `t' for -bt, etc.). Suggested by
Claude Marinier <MARINIER@emp.ewd.dreo.dnd.ca>.
Add new delivery mode (Odd) that defers all map lookups to queue runs.
Kind of like queue-only mode (Odq) except it tries to avoid
any external service requests; for dial-on-demand hosts that
want to minimize DNS lookups when mail is being queued. For
this to work you will also have to make sure that gethostbyname
of your local host name does not do a DNS lookup.
Improved handling of "out of space" conditions from John Myers of
Carnegie Mellon.
Improved security for mailing to files on systems that have fchmod(2)
support.
Improve "cannot send message for N days" message -- now says "could
not send for past N days". Suggested by Tom Moore of AT&T
Global Information Solutions.
Less misleading Subject: line on messages sent to postmaster only.
From Motonori Nakamura.
Avoid duplicate error messages on bad command line flags. From
Motonori Nakamura.
Better error message for case where ruleset 0 falls off the end
or otherwise does not resolve to a canonical triple.
Fix a problem that could cause multiple bounce messages if a bad
address was sent along with a good address to an SMTP
site where that SMTP site returned a 4yz code in response
to the final dot of the data. Problem reported by David
James of British Telecom.
Add "volatile" declarations so that gcc -O2 will work. Patches
from Alexander Dupuy of System Management ARTS.
Delete duplicates in MX lists -- believe it or not, there are sites
that list the same host twice in an MX list. This deletion
only works on adjacent preferences, so an MX list that
had A=5, B=10, A=15 would leave both As, but one that had
A=5, A=10, B=15 would reduce to A, B. This is intentional,
just in case there is something weird I haven't thought of.
Suggested by Barry Shein of Software Tool & Die.
SECURITY: .forward files cannot be symbolic links. If they are,
a bad guy can read your private files.
PORTABILITY FIXES:
Solaris 2 from Rob McMahon <cudcv@csv.warwick.ac.uk>.
System V Release 4 from Motonori Nakamura of Ritsumeikan
University. This expands the disk size
checking to include all (?) SVR4 configurations.
System V Release 4 from Kimmo Suominen -- initgroups(3)
and setrlimit(2) are both available.
System V Release 4 from sob@sculley.ffg.com -- some versions
apparently "have EX_OK defined in other headerfiles."
Linux Makefile typo.
Linux getusershell(3) is broken in Slackware 2.0 --
from Andrew Pam of Xanadu Australia.
More Linux tweaking from John Kennedy of California State
University, Chico.
Cray changes from Eric Wassenaar: ``On Cray, shorts,
ints, and longs are all 64 bits, and all structs
are multiples of 64 bits. This means that the
sizeof operator returns only multiples of 8.
This requires adaptation of code that really
deals with 32 bit or 16 bit fields, such as IP
addresses or nameserver fields.''
DG/UX 5.4.3 from Mark T. Robinson <mtr@ornl.gov>. To
get the old behavior, use -DDGUX_5_4_2.
DG/UX hack: add _FORCE_MAIL_LOCAL_=yes environment
variable to fix bogus /bin/mail behavior.
Tandem NonStop-UX from Rick McCarty <mccarty@mpd.tandem.com>.
This also cleans up some System V Release 4 compile
problems.
Solaris 2: sendmail.cw file should be in /etc/mail to
match all the other configuration files. Fix
from Glenn Barry of Emory University.
Solaris 2.3: compile problem in conf.c. Fix from Alain
Nissen of the University of Liege, Belgium.
Ultrix: freespace calculation was incorrect. Fix from
Takashi Kizu of Osaka University.
SVR4: running in background gets a SIGTTOU because the
emulation code doesn't realize that "getpeername"
doesn't require reading the file. Fix from Peter
Wemm of DIALix.
Solaris 2.3: due to an apparent bug in the socket emulation
library, sockets can get into a "wedged" state where
they just return EPROTO; closing and re-opening the
socket clears the problem. Fix from Bob Manson
of Ohio State University.
Hitachi 3050R & 3050RX running HI-UX/WE2: portability
fixes from Akihiro Hashimoto ("Hash") of Chiba
University.
AIX changes to allow setproctitle to work from Rainer Sch鰌f
of Zentrum f黵 Datenverarbeitung der Universit鋞
Mainz.
AIX changes for load average from Ed Ravin of NASA/Goddard.
SCO Unix from Chip Rosenthal of Unicom (code was using the
wrong statfs call).
ANSI C fixes from Adam Glass (NetBSD project).
Stardent Titan/ANSI C fixes from Kate Hedstrom of Rutgers
University.
DG-UX fixes from Bruce Nagel of Data General.
IRIX64 updates from Mark Levinson of the University of
Rochester Medical Center.
Altos System V (``the first UNIX/XENIX merge the Altos
did for their Series 1000 & Series 2000 line;
their merged code was licensed back to AT&T and
Microsoft and became System V release 3.2'') from
Tim Rice <timr@crl.com>.
OSF/1 running on Intel Paragon from Jeff A. Earickson
<jeff@ssd.intel.com> of Intel Scalable Systems
Division.
Amdahl UTS System V 2.1.5 (SVr3-based) from Janet Jackson
<janet@dialix.oz.au>.
System V Release 4 (statvfs semantic fix) from Alain
Durand of I.M.A.G.
HP-UX 10.x multiprocessor load average changes from
Scott Hutton and Jeff Sumler of Indiana University.
Cray CSOS from Scott Bolte of Cray Computer Corporation.
Unicos 8.0 from Douglas K. Rand of the University of North
Dakota, Scientific Computing Center.
Solaris 2.4 fixes from Sanjay Dani of Dani Communications.
ConvexOS 11.0 from Christophe Wolfhugel.
IRIX 4.0.5 from David Ashton-Reader of CADcentre.
ISC UNIX from J. J. Bailey.
HP-UX 9.xx on the 8xx series machines from Remy Giraud
of Meteo France.
HP-UX configuration from Tom Lane <tgl@sss.pgh.pa.us>.
IRIX 5.2 and 5.3 from Kari E. Hurtta.
FreeBSD 2.0 from Mike Hickey of Federal Data Corporation.
Sony NEWS-OS 4.2.1R and 6.0.3 from Motonori Nakamura.
Omron LUNA unios-b, mach from Motonori Nakamura.
NEC EWS-UX/V 4.2 from Motonori Nakamura.
NeXT 2.1 from Bryan Costales.
AUX patch thanks to Mike Erwin of Apple Computer.
HP-UX 10.0 from John Beck of Hewlett-Packard.
Ultrix: allow -DBROKEN_RES_SEARCH=0 if you are using a
non-DEC resolver. Suggested by Allan Johannesen.
UnixWare 2.0 fixes from Petr Lampa of the Technical
University of Brno (Czech Republic).
KSR OS 1.2.2 support from Todd Miller of the University
of Colorado.
UX4800 support from Kazuhisa Shimizu of NEC.
MAKEMAP: allow -d flag to allow insertion of duplicate aliases
in type ``btree'' maps. The semantics of this are undefined
for regular maps, but it can be useful for the user database.
MAKEMAP: lock database file while rebuilding to avoid sendmail
lookups while the rebuild is going on. There is a race
condition between the open(... O_TRUNC ...) and the lock
on the file, but it should be quite small.
SMRSH: sendmail restricted shell added to the release. This can
be used as an alternative to /bin/sh for the "prog" mailer,
giving the local administrator more control over what
programs can be run from sendmail.
MAIL.LOCAL: add this local mailer to the tape. It is not really
part of the release proper, and isn't fully supported; in
particular, it does not run on System V based systems and
never will.
CONTRIB: a patch to rmail.c from Bill Gianopoulos of Raytheon
to allow rmail to compile on systems that don't have
function prototypes and systems that don't have snprintf.
CONTRIB: add the "mailprio" scripts that will help you sort mailing
lists by transaction delay times so that addresses that
respond quickly get sent first. This is to prevent very
sluggish servers from delaying other peoples' mail.
Contributed by Tony Sanders of BSDI.
CONTRIB: add the "bsdi.mc" file as contributed by Tony Sanders
of BSDI. This has a lot of comments to help people out.
CONFIG: Don't have .mc files include(../m4/cf.m4) -- instead,
put this on the m4 command line. On GNU m4 (which
supports the __file__ primitive) you can run m4 in an
arbitrary directory -- use either:
m4 ${CFDIR}/m4/cf.m4 config.mc > config.cf
or
m4 -I${CFDIR} m4/cf.m4 config.mc > config.cf
On other versions of m4 that don't support __file__, you
can use:
m4 -D_CF_DIR_=${CFDIR}/ ${CFDIR}/m4/cf.m4 ...
(Note the trailing slash on the _CF_DIR_ definition.)
Old versions of m4 will default to _CF_DIR_=.. for back
compatibility.
CONFIG: fix mail from <> so it will properly convert to
MAILER-DAEMON on local addresses.
CONFIG: fix code that was supposed to catch colons in host
names. Problem noted by John Gardiner Myers of CMU.
CONFIG: allow use of SMTP_MAILER_MAX in nullclient configuration.
From Paul Riddle of the University of Maryland, Baltimore
County.
CONFIG: Catch and reject "." as a host address.
CONFIG: Generalize domaintable to look up all domains, not
just unqualified ones.
CONFIG: Delete OLD_SENDMAIL support -- as near as I can tell, it
was never used and didn't work anyway.
CONFIG: Set flags A, w, 5, :, /, |, and @ on the "local" mailer
and d on all mailers in the UUCP class.
CONFIG: Allow "user+detail" to be aliased specially: it will first
look for an alias for "user+detail", then for "user+*", and
finally for "user". This is intended for forwarding mail
for system aliases such as root and postmaster to a
centralized hub.
CONFIG: add confEIGHT_BIT_HANDLING to set option 8 (see above).
CONFIG: add smtp8 mailer; this has the F=8 (just-send-8) flag set.
The F=8 flag is also set on the "relay" mailer, since
this is expected to be another sendmail.
CONFIG: avoid qualifying all UUCP addresses sent via SMTP with
the name of the UUCP_RELAY -- in some cases, this is the
wrong value (e.g., when we have local UUCP connections),
and this can create unreplyable addresses. From Chip
Rosenthal of Unicom.
CONFIG: add confRECEIVED_HEADER to change the format of the
Received: header inserted into all messages. Suggested by
Gary Mills of the University of Manitoba.
CONFIG: Make "notsticky" the default; use FEATURE(stickyhost)
to get the old behavior. I did this upon observing
that almost everyone needed this feature, and that the
concept I was trying to make happen didn't work with
some user agents anyway. FEATURE(notsticky) still works,
but it is a no-op.
CONFIG: Add LUSER_RELAY -- the host to which unrecognized user
names are sent, rather than immediately diagnosing them
as User Unknown.
CONFIG: Add SMTP_MAILER_ARGS, ESMTP_MAILER_ARGS, SMTP8_MAILER_ARGS,
and RELAY_MAILER_ARGS to set the arguments for the
indicated mailers. All default to "IPC $h". Patch from
Larry Parmelee of Cornell University.
CONFIG: pop mailer needs F=n flag to avoid "annoying side effects
on the client side" and F=P to get an appropriate
return-path. From Kimmo Suominen.
CONFIG: add FEATURE(local_procmail) to use the procmail program
as the local mailer. For addresses of the form "user+detail"
the "detail" part is passed to procmail via the -a flag.
Contributed by Kimmo Suominen.
CONFIG: add MAILER(procmail) to add an interface to procmail for
use from mailertables. This lets you execute arbitrary
procmail scripts. Contributed by Kimmo Suominen.
CONFIG: add T= fields (MTS type) to local, smtp, and uucp mailers.
CONFIG: add OSTYPE(ptx2) for DYNIX/ptx 2.x from Sequent. From
Paul Southworth of CICNet Systems Support.
CONFIG: use -a$g as default to UUCP mailers, instead of -a$f.
This causes the null return path to be rewritten as
MAILER-DAEMON; otherwise UUCP gets horribly confused.
From Michael Hohmuth of Technische Universitat Dresden.
CONFIG: Add FEATURE(bestmx_is_local) to cause any hosts that
list us as the best possible MX record to be treated as
though they were local (essentially, assume that they
are included in $=w). This can cause additional DNS
traffic, but is easier to administer if this fits your
local model. It does not work reliably if there are
multiple hosts that share the best MX preference.
Code contributed by John Oleynick of Rutgers.
CONFIG: Add FEATURE(smrsh) to use smrsh (the SendMail Restricted
SHell) instead of /bin/sh as the program used for delivery
to programs. If an argument is included, it is used as
the path to smrsh; otherwise, /usr/local/etc/smrsh is
assumed.
CONFIG: Add LOCAL_MAILER_MAX and PROCMAILER_MAILER_MAX to limit the
size of messages to the local and procmail mailers
respectively. Contributed by Brad Knowles of the Defense
Information Systems Agency.
CONFIG: Handle leading ``phrase:'' and trailing ``;'' as comments
(just like text outside of angle brackets) in order to
properly deal with ``group: addr1, ... addrN;'' syntax.
CONFIG: Require OSTYPE macro (the defaults really don't apply to
any real systems any more) and tweak the DOMAIN macro
so that it is less likely that users will accidentally use
the Berkeley defaults. Also, create some generic files
that really can be used in the real world.
CONFIG: Add new configuration macros to set character sets for
messages _arriving from_ various mailers: LOCAL_MAILER_CHARSET,
SMTP_MAILER_CHARSET, and UUCP_MAILER_CHARSET.
CONFIG: Change UUCP_MAX_SIZE to UUCP_MAILER_MAX for consistency.
The old name will still be accepted for a while at least.
CONFIG: Implement DECNET_RELAY as spec for host to which DECNET
mail (.DECNET pseudo-domain or node::user) will be sent.
As with all relays, it can be ``mailer:hostname''. Suggested
by Scott Hutton.
CONFIG: Add MAILER(mail11) to get DECnet support. Code contributed
by Barb Dijker of Labyrinth Computer Services.
CONFIG: change confCHECK_ALIASES to default to False -- it has poor
performance for large alias files, and this confused many
people.
CONFIG: Add confCF_VERSION to append local information to the
configuration version number displayed during SMTP startup.
CONFIG: fix some.newsgroup.usenet@local.host syntax (previously it
would only work when locally addressed. Fix from
Edvard Tuinder of Cistron Internet Services.
CONFIG: use ${opMode} to avoid error on .REDIRECT addresses if option
"n" (CheckAliases) is set when rebuilding alias database.
Based on code contributed by Claude Marinier.
CONFIG: Allow mailertable to have values of the form
``error:code message''. The ``code'' is a status code
derived from the sysexits codes -- e.g., NOHOST or UNAVAILABLE.
Contributed by David James <dwj@agw.bt.co.uk>.
CONFIG: add MASQUERADE_DOMAIN(domain list) to extend the list of
sender domains that will be replaced with the masquerade name.
These domains will not be treated as local, but if mail passes
through with sender addresses in those domains they will be
replaced by the masquerade name. These can also be specified
in a file using MASQUERADE_DOMAIN_FILE(filename).
CONFIG: add FEATURE(masquerade_envelope) to masquerade the envelope
as well as the header. Substantial improvements to this
code were contributed by Per Hedeland.
CONFIG: add MAILER(phquery) to define a new "ph" mailer; this can be
accessed from a mailertable to do CCSO ph lookups. Contributed
by Kimmo Suominen.
CONFIG: add MAILER(cyrus) to define a new Cyrus mailer; this can be
used to define cyrus and cyrusbb mailers (for IMAP support).
Contributed by John Gardiner Myers of Carnegie Mellon.
CONFIG: add confUUCP_MAILER to select default mailer to use for
UUCP addressing. Suggested by Tom Moore of AT&T GIS.
NEW FILES:
cf/cf/cs-hpux10.mc
cf/cf/cs-solaris2.mc
cf/cf/cyrusproto.mc
cf/cf/generic-bsd4.4.mc
cf/cf/generic-hpux10.mc
cf/cf/generic-hpux9.mc
cf/cf/generic-osf1.mc
cf/cf/generic-solaris2.mc
cf/cf/generic-sunos4.1.mc
cf/cf/generic-ultrix4.mc
cf/cf/huginn.cs.mc
cf/domain/berkeley-only.m4
cf/domain/generic.m4
cf/feature/bestmx_is_local.m4
cf/feature/local_procmail.m4
cf/feature/masquerade_envelope.m4
cf/feature/smrsh.m4
cf/feature/stickyhost.m4
cf/feature/use_ct_file.m4
cf/m4/cfhead.m4
cf/mailer/cyrus.m4
cf/mailer/mail11.m4
cf/mailer/phquery.m4
cf/mailer/procmail.m4
cf/ostype/amdahl-uts.m4
cf/ostype/bsdi2.0.m4
cf/ostype/hpux10.m4
cf/ostype/irix5.m4
cf/ostype/isc4.1.m4
cf/ostype/ptx2.m4
cf/ostype/unknown.m4
contrib/bsdi.mc
contrib/mailprio
contrib/rmail.oldsys.patch
mail.local/mail.local.0
makemap/makemap.0
smrsh/README
smrsh/smrsh.0
smrsh/smrsh.8
smrsh/smrsh.c
src/Makefiles/Makefile.CSOS
src/Makefiles/Makefile.EWS-UX_V
src/Makefiles/Makefile.HP-UX.10
src/Makefiles/Makefile.IRIX.5.x
src/Makefiles/Makefile.IRIX64
src/Makefiles/Makefile.ISC
src/Makefiles/Makefile.KSR
src/Makefiles/Makefile.NEWS-OS.4.x
src/Makefiles/Makefile.NEWS-OS.6.x
src/Makefiles/Makefile.NEXTSTEP
src/Makefiles/Makefile.NonStop-UX
src/Makefiles/Makefile.Paragon
src/Makefiles/Makefile.SCO.3.2v4.2
src/Makefiles/Makefile.SunOS.5.3
src/Makefiles/Makefile.SunOS.5.4
src/Makefiles/Makefile.SunOS.5.5
src/Makefiles/Makefile.UNIX_SV.4.x.i386
src/Makefiles/Makefile.uts.systemV
src/Makefiles/Makefile.UX4800
src/aliases.0
src/mailq.0
src/mime.c
src/newaliases.0
src/sendmail.0
test/t_seteuid.c
RENAMED FILES:
cf/cf/alpha.mc => cf/cf/s2k-osf1.mc
cf/cf/chez.mc => cf/cf/chez.cs.mc
cf/cf/hpux-cs-exposed.mc => cf/cf/cs-hpux9.mc
cf/cf/osf1-cs-exposed.mc => cf/cf/cs-osf1.mc
cf/cf/s2k.mc => cf/cf/s2k-ultrix4.mc
cf/cf/sunos4.1-cs-exposed.mc => cf/cf/cs-sunos4.1.mc
cf/cf/ultrix4.1-cs-exposed.mc => cf/cf/cs-ultrix4.mc
cf/cf/vangogh.mc => cf/cf/vangogh.cs.mc
cf/domain/Berkeley.m4 => cf/domain/Berkeley.EDU.m4
cf/domain/cs-exposed.m4 => cf/domain/CS.Berkeley.EDU.m4
cf/domain/eecs-hidden.m4 => cf/domain/EECS.Berkeley.EDU.m4
cf/domain/s2k.m4 => cf/domain/S2K.Berkeley.EDU.m4
cf/ostype/hpux.m4 => cf/ostype/hpux9.m4
cf/ostype/irix.m4 => cf/ostype/irix4.m4
cf/ostype/ultrix4.1.m4 => cf/ostype/ultrix4.m4
src/Makefile.* => src/Makefiles/Makefile.*
src/Makefile.AUX => src/Makefiles/Makefile.A-UX
src/Makefile.BSDI => src/Makefiles/Makefile.BSD-OS
src/Makefile.DGUX => src/Makefiles/Makefile.dgux
src/Makefile.RISCos => src/Makefiles/Makefile.UMIPS
src/Makefile.SunOS.4.0.3 => src/Makefiles/Makefile.SunOS.4.0
OBSOLETED FILES:
cf/cf/cogsci.mc
cf/cf/cs-exposed.mc
cf/cf/cs-hidden.mc
cf/cf/hpux-cs-hidden.mc
cf/cf/knecht.mc
cf/cf/osf1-cs-hidden.mc
cf/cf/sunos3.5-cs-exposed.mc
cf/cf/sunos3.5-cs-hidden.mc
cf/cf/sunos4.1-cs-hidden.mc
cf/cf/ultrix4.1-cs-hidden.mc
cf/domain/cs-hidden.m4
contrib/rcpt-streaming
src/Makefiles/Makefile.SunOS.5.x
8.6.13/8.6.12 1996/01/25
SECURITY: In some cases it was still possible for an attacker to
insert newlines into a queue file, thus allowing access to
any user (except root).
CONFIG: no changes -- it is not a bug that the configuration
version number is unchanged.
8.6.12/8.6.12 1995/03/28
Fix to IDENT code (it was getting the size of the reply buffer
too small, so nothing was ever accepted). Fix from several
people, including Allan Johannesen, Shane Castle of the
Boulder County Information Services, and Jeff Smith of
Warwick University (all arrived within a few hours of
each other!).
Fix a problem that could cause large jobs to run out of
file descriptors on systems that use vfork() rather
than fork().
8.6.11/8.6.11 1995/03/08
The ``possible attack'' message would be logged more often
than necessary if you are using Pine as a user agent.
The wrong host would be reported in the ``possible attack''
message when attempted from IDENT.
In some cases the syslog buffer could be overflowed when
reporting the ``possible attack'' message. This can
cause denial of service attacks. Truncate the message
to 80 characters to prevent this problem.
When reading the IDENT response a loop is needed around the
read from the network to ensure that you don't get
partial lines.
Password entries without any shell listed (that is, a null
shell) wouldn't match as "ok". Problem noted by
Rob McMahon.
When running BIND 4.9.x a problem could occur because the
_res.options field is initialized differently than it
was historically -- this requires that sendmail call
res_init before it tweaks any bits.
Fix an incompatibility in openxscript() between the file open mode
and the stdio mode passed to fdopen. This caused UnixWare
2.0 to have conniptions. Fix from Martin Sohnius of
Novell Labs Europe.
Fix problem with static linking of local getopt routine when
using GNU's ld command. Fix from John Kennedy of
Cal State Chico.
It was possible to turn off privacy flags. Problem noted by
*Hobbit*.
Be more paranoid about writing files. Suggestions by *Hobbit*
and Liudvikas Bukys.
MAKEMAP: fixes for 64 bit machines (DEC Alphas in particular)
from Spider Boardman.
CONFIG: No changes (version number only, to keep it in sync
with the binaries).
8.6.10/8.6.10 1995/02/10
SECURITY: Diagnose bogus values to some command line flags that
could allow trash to get into headers and qf files.
Validate the name of the user returned by the IDENT protocol.
Some systems that really dislike IDENT send intentionally
bogus information. Problem pointed out by Michael Bushnell
of the Free Software Foundation. Has some security
implications.
Fix a problem causing error messages about DNS problems when
the host name contained a percent sign to act oddly
because it was passed as a printf-style format string.
In some cases this could cause core dumps.
Avoid possible buffer overrun in returntosender() if error
message is quite long. From Fletcher Mattox of the
University of Texas.
Fix a problem that would silently drop "too many hops" error
messages if and only if you were sending to an alias.
From Jon Giltner of the University of Colorado and
Dan Harton of Oak Ridge National Laboratory.
Fix a bug that caused core dumps on some systems if -d11.2 was
set and e->e_message was null. Fix from Bruce Nagel of
Data General.
Fix problem that can still cause df files to be left around
after "hop count exceeded" messages. Fix from Andrew
Chang and Shau-Ping Lo of SunSoft.
Fix a problem that can cause buffer overflows on very long
user names (as might occur if you piped to a program
with a lot of arguments).
Avoid returning an error and re-queueing if the host signature
is null; this can occur on addresses like ``user@.''.
Problem noted by Wesley Craig and the University of
Michigan.
Avoid possible calls to malloc(0) if MCI caching is turned
off. Bug fix from Pierre David of the Laboratoire
Parallelisme, Reseaux, Systemes et Modelisation (PRiSM),
Universite de Versailles - St Quentin, and Jacky
Thibault.
Make a local copy of the line being sent via senttolist() -- in
some cases, buffers could get trashed by map lookups
causing it to do unexpected things. This also simplifies
some of the map code.
CONFIG: No changes (version number only, to keep it in sync
with the binaries).
8.6.9/8.6.9 1994/04/19
Do all mail delivery completely disconnected from any terminal.
This provides consistency with daemon delivery and
may have some security implications.
Make sure that malloc doesn't get called with zero size,
since that fails on some systems. Reported by Ed
Hill of the University of Iowa.
Fix multi-line values for $e (SMTP greeting message). Reported
by Mike O'Connor of Ford Motor Company.
Avoid syserr if no NIS domain name is defined, but the map it
is trying to open is optional. From Win Bent of USC.
Changes for picky compilers from Ed Gould of Digital Equipment.
Hesiod support for UDB from Todd Miller of the University of
Colorado. Use "hesiod" as the service name in the U
option.
Fix a problem that failed to set the "authentic" host name (that
is, the one derived from the socket info) if you called
sendmail -bs from inetd. Based on code contributed by
Todd Miller (this problem was also reported by Guy Helmer
of Dakota State University). This also fixes a related
problem reported by Liudvikas Bukys of the University of
Rochester.
Parameterize "nroff -h" in all the Makefiles so people with
variant versions can use them easily. Suggested by
Peter Collinson of Hillside Systems.
SMTP "MAIL" commands with multiple ESMTP parameters required two
spaces between parameters instead of one. Reported by
Valdis Kletnieks of Virginia Tech.
Reduce the number of system calls during message collection by
using global timeouts around the collect() loop. This
code was contributed by Eric Wassenaar.
If the initial hostname name gathering results in a name
without a dot (usually caused by NIS misconfiguration)
and BIND is compiled in, directly access DNS to get
the canonical name. This should make life easier for
Solaris systems. If it still can't be resolved, and
if the name server is listed as "required", try again
in 30 seconds. If that also fails, exit immediately to
avoid bogus "config error: mail loops back to myself"
messages.
Improve the "MAIL DELETED BECAUSE OF LACK OF DISK SPACE" error
message to explain how much space was available and
sound a bit less threatening. Suggested by Stan Janet
of the National Institute of Standards and Technology.
If mail is delivered to an alias that has an owner, deliver any
requested return-receipt immediately, and strip the
Return-Receipt-To: header from the subsequent message.
This prevents a certain class of denial of service
attack, arguably gives more reasonable semantics, and
moves things more towards what will probably become a
network standard. Suggested by Christopher Davis of
Kapor Enterprises.
Add a "noreceipts" privacy flag to turn off all return receipts
without recompiling.
Avoid printing ESMTP parameters as part of the error message
if there are errors during parsing. This change is
purely cosmetic.
Avoid sending out error messages during the collect phase of
SMTP; there is an MVS mailer from UCLA that gets
confused by this. Of course, I think it's their bug....
Check for the $j macro getting undefined, losing a dot, or getting
lost from $=w in the daemon before accepting a connection;
if it is, it dumps state, prints a LOG_ALERT message,
and drops core for debugging. This is an attempt to
track down a bug that I thought was long since gone.
If you see this, please forward the log fragment to
sendmail@sendmail.ORG.
Change OLD_NEWDB from a #ifdef to a #if so it can be turned off
with -DOLD_NEWDB=0 on the command line. From Christophe
Wolfhugel.
Instead of trying to truncate the listen queue for the server
SMTP port when the load average is too high, just close
the port completely and reopen it later as needed.
This ensures that the other end gets a quick "connection
refused" response, and that the connection can be
recovered later. In particular, some socket emulations
seem to get confused if you tweak the listen queue
size around and can never start listening to connections
again. The down side is that someone could start up
another daemon process in the interim, so you could
have multiple daemons all not listening to connections;
this could in turn cause the sendmail.pid file to be
incorrect. A better approach might be to accept the
connection and give a 421 code, but that could break
other mailers in mysterious ways and have paging behavior
implications.
Fix a glitch in TCP-level debugging that caused flag 16.101 to
set debugging on the wrong socket. From Eric Wassenaar.
When creating a df* temporary file, be sure you truncate any
existing data in the file -- otherwise system crashes
and the like could result in extra data being sent.
DOC: Replace the CHANGES-R5-R8 readme file with a paper in the
doc directory. This includes some additional
information.
CONFIG: change UUCP rules to never add $U! or $k! on the front
of recipient envelope addresses. This should have been
handled by the $&h trick, but broke if people were
mixing domainized and UUCP addresses. They should
probably have converted all the way over to uucp-uudom
instead of uucp-{new,old}, but the failure mode was to
loop the mail, which was bad news.
Portability fixes:
Newer BSDI systems (several people).
Older BSDI systems from Christophe Wolfhugel.
Intergraph CLIX, from Paul Southworth of CICNet.
UnixWare, from Evan Champion.
NetBSD from Adam Glass.
Solaris from Quentin Campbell of the University of
Newcastle upon Tyne.
IRIX from Dean Cookson and Bill Driscoll of Mitre
Corporation.
NCR 3000 from Kevin Darcy of Chrysler Financial Corporation.
SunOS (it has setsid() and setvbuf() calls) from
Jonathan Kamens of OpenVision Technologies.
HP-UX from Tor Lillqvist.
New Files:
src/Makefile.CLIX
src/Makefile.NCR3000
doc/changes/Makefile
doc/changes/changes.me
doc/changes/changes.ps
8.6.8/8.6.6 1994/03/21
SECURITY: it was possible to read any file as root using the
E (error message) option. Reported by Richard Jones;
fixed by Michael Corrigan and Christophe Wolfhugel.
8.6.7/8.6.6 1994/03/14
SECURITY: it was possible to get root access by using weird
values to the -d flag. Thanks to Alain Durand of
INRIA for forwarding me the notice from the bugtraq
list.
8.6.6/8.6.6 1994/03/13
SECURITY: the ability to give files away on System V-based
systems proved dangerous -- don't run as the owner
of a :include: file on a system that allows giveaways.
Unfortunately, this also applies to determining a
valid shell.
IMPORTANT: Previous versions weren't expiring old connections
in the connection cache for a long time under some
circumstances. This could result in resource exhaustion,
both at your end and at the other end. This checks the
connections for timeouts much more frequently. From
Doug Anderson of NCSC.
Fix a glitch that snuck in that caused programs to be run as
the sender instead of the recipient if the mail was
from a local user to another local user. From
Motonori Nakamura of Kyoto University.
Fix "wildcard" on /etc/shells matching -- instead of looking
for "*", look for "/SENDMAIL/ANY/SHELL/". From
Bryan Costales of ICSI.
Change the method used to declare the "statfs" availability;
instead of HASSTATFS and/or HASUSTAT with a ton of
tweaking in conf.c, there is a single #define called
SFS_TYPE which takes on one of six values (SFS_NONE
for no statfs availability, SFS_USTAT for the ustat(2)
syscall, SFS_4ARGS for a four argument statfs(2) call,
and SFS_VFS, SFS_MOUNT, or SFS_STATFS for a two argument
statfs(2) call with the declarations in <sys/vfs.h>,
<sys/mount.h>, or <sys/statfs.h> respectively).
Fix glitch in NetInfo support that could return garbage if
there was no "/locations/sendmail" property. From
David Meyer of the University of Virginia.
Change HASFLOCK from defined/not-defined to a 0/1 definition
to allow Linux to turn it off even though it is a
BSD-like system.
Allow setting of "ident" timeout to zero to turn off the ident
protocol entirely.
Make 7-bit stripping local to a connection (instead of to a
mailer); this allows you to specify that SMTP is a
7-bit channel, but revert to 8-bit should it advertise
that it supports 8BITMIME. You still have to specify
mailer flag 7 to get this stripping at all.
Improve makesendmail script so it handles more cases automatically.
Tighten up restrictions on taking ownership of :include: files
to avoid problems on systems that allow you to give away
files.
Fix a problem that made it impossible to rebuild the alias
file if it was on a read-only file system. From
Harry Edmon of the University of Washington.
Improve MX randomization function. From John Gardiner Myers
of CMU.
Fix a minor glitch causing a bogus message to be printed (used
%s instead of %d in a printf string for the line number)
when a bad queue file was read. From Harry Edmon.
Allow $s to remain NULL on locally generated mail. I'm not
sure this is necessary, but a lot of people have complained
about it, and there is a legitimate question as to whether
"localhost" is legal as an 822-style domain.
Fix a problem with very short line lengths (mailer L= flag) in
headers. This causes a leading space to be added onto
continuation lines (including in the body!), and also
tries to wrap headers containing addresses (From:, To:,
etc) intelligently at the shorter line lengths. Problem
Reported by Lars-Johan Liman of SUNET Operations Center.
Log the real user name when logging syserrs, since these can have
security implications. Suggested by several people.
Fix address logging of cached connections -- it used to always
log the numeric address as zero. This is a somewhat
bogus implementation in that it does an extra system
call, but it should be an inexpensive one. Fix from
Motonori Nakamura.
Tighten up handling of short syslog buffers even more -- there
were cases where the outgoing relay= name was too long
to share a line with delay= and mailer= logging.
Limit the overhead on split envelopes to one open file descriptor
per envelope -- previously the overhead was three
descriptors. This was in response to a problem reported
by P{r (Pell) Emanuelsson.
Fixes to better handle the case of unexpected connection closes;
this redirects the output to the transcript so the info
is not lost. From Eric Wassenaar.
Fix potential string overrun if you macro evaluate a string that
has a naked $ at the end. Problem noted by James Matheson
<jmrm@eng.cam.ac.uk>.
Make default error number on $#error messages 553 (``Requested
action not taken: mailbox name not allowed'') instead of
501 (``Syntax error in parameters or arguments'') to
avoid bogus "protocol error" messages.
Strip off any existing trailing dot on names during $[ ... $]
lookup. This prevents it from ending up with two dots
on the end of dot terminated names. From Wesley Craig
of the University of Michigan and Bryan Costales of ICSI.
Clean up file class reading so that the debugging information is
more informative. It hadn't been using setclass, so you
didn't see the class items being added.
Avoid core dump if you are running a version of sendmail where
NIS is compiled in, and you specify an NIS map, but
NIS is not running. Fix from John Oleynick of
Rutgers.
Diagnose bizarre case where res_search returns a failure value,
but sets h_errno to a success value.
Make sure that "too many hops" messages are considered important
enough to send an error to the Postmaster (that is, the
address specified in the P option). This fix should
help problems that cause the df file to be left around
sometimes -- unfortunately, I can't seem to reproduce
the problem myself.
Avoid core dump (null pointer reference) on EXPN command; this
only occurred if your log level was set to 10 or higher
and the target account was an alias or had a .forward file.
Problem noted by Janne Himanka.
Avoid "denial of service" attacks by someone who is flooding your
SMTP port with bad commands by shutting the connection
after 25 bad commands are issued. From Kyle Jones of
UUNET.
Fix core dump on error messages with very long "to" buffers;
fmtmsg overflows the message buffer. Fixed by trimming
the to address to 203 characters. Problem reported by
John Oleynick.
Fix configuration for HASFLOCK -- there were some spots where
a #ifndef was incorrectly #ifdef. Pointed out by
George Baltz of the University of Maryland.
Fix a typo in savemail() that could cause the error message To:
lists to be incorrect in some places. From Motonori
Nakamura.
Fix a glitch that can cause duplicate error messages on split
envelopes where an address on one of the lists has a
name server failure. Fix from Voradesh Yenbut of the
University of Washington.
Fix possible bogus pointer reference on ESMTP parameters that
don't have an ``=value'' part.
CNAME loops caused an error message to be generated, but also
re-queued the message. Changed to just re-queue the
message (it's really hard to just bounce it because
of the weird way the name server works in the presence
of CNAME loops). Problem noted by James M.R.Matheson
of Cambridge University.
Avoid giving ``warning: foo owned process doing -bs'' messages
if they use ``MAIL FROM:<foo>'' where foo is their true
user name. Suggested by Andreas Stolcke of ICSI.
Change the NAMED_BIND compile flag to be a 0/1 flag so you can
override it easily in the Makefile -- that is, you can
turn it off using -DNAMED_BIND=0.
If a gethostbyname(...) of an address with a trailing dot fails,
try it without the trailing dot. This is because if
you have a version of gethostbyname() that falls back
to NIS or the /etc/hosts file it will fail to find
perfectly reasonable names that just don't happen to
be dot terminated in the hosts file. You don't want to
strip the dot first though because we're trying to ensure
that country names that match one of your subdomains get
a chance.
PRALIASES: fix bogus output on non-null-terminated strings.
From Bill Gianopoulos of Raytheon.
CONFIG: Avoid rewriting anything that matches $w to be $j.
This was in code intended to only catch the self-literal
address (that is, [1.2.3.4], where 1.2.3.4 is your
IP address), but the code was broken. However, it will
still do this if $M is defined; this is necessary to
get client configurations to work (sigh). Note that this
means that $M overrides :mailname entries in the user
database! Problem noted by Paul Southworth.
CONFIG: Fix definition of Solaris help file location. From
Steve Cliffe <steve@gorgon.cs.uow.edu.au>.
CONFIG: Fix bug that broke news.group.USENET mappings.
CONFIG: Allow declaration of SMTP_MAILER_MAX, FAX_MAILER_MAX,
and USENET_MAILER_MAX to tweak the maximum message
size for various mailers.
CONFIG: Change definition of USENET_MAILER_ARGS to include argv[0]
instead of assuming that it is "inews" for consistency
with other mailers. From Michael Corrigan of UC San Diego.
CONFIG: When mail is forwarded to a LOCAL_RELAY or a MAIL_HUB,
qualify the address in the SMTP envelope as user@{relay|hub}
instead of user@$j. From Bill Wisner of The Well.
CONFIG: Fix route-addr syntax in nullrelay configuration set.
CONFIG: Don't turn off case mapping of user names in the local
mailer for IRIX. This was different than most every other
system.
CONFIG: Avoid infinite loops on certainly list:; syntaxes in
envelope. Noted by Thierry Besancon
<besancon@excalibur.ens.fr>.
CONFIG: Don't include -z by default on uux line -- most systems
don't want it set by default. Pointed out by Philippe
Michel of Thomson CSF.
CONFIG: Fix some bugs with mailertables -- for example, if your
host name was foo.bar.ray.com and you matched against
".ray.com", the old implementation bound %1 to "bar"
instead of "foo.bar". Also, allow "." in the mailertable
to match anything -- essentially, take over SMART_HOST.
This also moves matching of explicit local host names
before the mailertable so they don't have to be special
cased in the mailertable data. Reported by Bill
Gianopoulos of Raytheon; the fix for the %1 binding
problem was contributed by Nicholas Comanos of the
University of Sydney.
CONFIG: Don't include "root" in class $=L (users to deliver
locally, even if a hub or relay exists) by default.
This is because of the known bug where definition of
both a LOCAL_RELAY and a MAIL_HUB causes $=L to ignore
both and deliver into the local mailbox.
CONFIG: Move up bitdomain and uudomain handling so that they
are done before .UUCP class matching; uudomain was
reported as ineffective before. This also frees up
diversion 8 for future use. Problem reported by Kimmo
Suominen.
CONFIG: Don't try to convert dotted IP address (e.g., [1.2.3.4])
into host names. As pointed out by Jonathan Kamens,
these are often used because either the forward or reverse
mapping is broken; this translation makes it broken again.
DOC: Clarify $@ and $: in the Install & Op Guide. From Kimmo
Suominen.
Portability fixes:
Unicos from David L. Kensiski of Sterling Software.
DomainOS from Don Lewis of Silicon Systems.
GNU m4 1.0.3 from Karst Koymans of Utrecht University.
Convex from Kimmo Suominen <kim@tac.nyc.ny.us>.
NetBSD from Adam Glass <glass@sun-lamp.cs.berkeley.edu>.
BSD/386 from Tony Sanders of BSDI.
Apollo from Eric Wassenaar.
DGUX from Doug Anderson.
Sequent DYNIX/ptx 2.0 from Tim Wright of Sequent.
NEW FILES:
src/Makefile.DomainOS
src/Makefile.PTX
src/Makefile.SunOS.5.1
src/Makefile.SunOS.5.2
src/Makefile.SunOS.5.x
src/mailq.1
cf/ostype/domainos.m4
doc/op/Makefile
doc/intro/Makefile
doc/usenix/Makefile
8.6.5/8.6.5 1994/01/13
Security fix: /.forward could be owned by anyone (the test
to allow root to own any file was backwards). From
Bob Campbell at U.C. Berkeley.
Security fix: group ids were not completely set when programs
were invoked. This caused programs to have group
permissions they should not have had (usually group
daemon instead of their own group). In particular,
Perl scripts would refuse to run.
Security: check to make sure files that are written are not
symbolic links (at least under some circumstances).
Although this does not respond to a specific known
attack, it's just a good idea. Suggested by
Christian Wettergren.
Security fix: if a user had an NFS mounted home directory on
a system with a restricted shell listed in their
/etc/passwd entry, they could still execute any
program by putting that in their .forward file.
This fix prevents that by insisting that their shell
appear in /etc/shells before allowing a .forward to
execute a program or write a file. You can disable
this by putting "*" in /etc/shells. It also won't
permit world-writable :include: files to reference
programs or files (there's no way to disable this).
These behaviors are only one level deep -- for
example, it is legal for a world-writable :include:
file to reference an alias that writes a file, on
the assumption that the alias file is well controlled.
Security fix: root was not treated suspiciously enough when
looking into subdirectories. This would potentially
allow a cracker to examine files that were publicly
readable but in a non-publicly searchable directory.
Fix a problem that causes an error on QUIT on a cached
connection to create problems on the current job.
These are typically unrelated, so errors occur in
the wrong place.
Reset CurrentLA in sendall() -- this makes sendmail queue
runs more responsive to load average, and fixes a
problem that ignored the load average in locally
generated mail. From Eric Wassenaar.
Fix possible core dump on aliases with null LHS. From
John Orthoefer of BB&N.
Revert to using flock() whenever possible -- there are just
too many bugs in fcntl() locking, particularly over
NFS, that cause sendmail to fail in perverse ways.
Fix a bug that causes the connection cache to get confused
when sending error messages. This resulted in
"unexpected close" messages. It should fix itself
on the following queue run. Problem noted by
Liudvikas Bukys of the University of Rochester.
Include $k in $=k as documented in the Install & Op Guide.
This seems odd, but it was documented.... From
Michael Corrigan of UCSD.
Fix problem that caused :include:s from alias files to be
forced to be owned by root instead of daemon
(actually DefUid). From Tim Irvin.
Diagnose unrecognized I option values -- from Mortin Forssen
of the Chalmers University of Technology.
Make "error" mailer work consistently when there is no error
code associated with it -- previously it returned OK
even though there was a real problem. Now it assumes
EX_UNAVAILABLE.
Fix bug that caused the last header line of messages that had
no body and which were terminated with EOF instead of
"." to be discarded. Problem noted by Liudvikas Bukys.
Fix core dump on SMTP mail to programs that failed -- it tried
to go to a "next MX host" when none existed, causing
a core dump. From der Mouse at McGill University.
Change IDENTPROTO from a defined/not defined to a 0/1 switch;
this makes it easier to turn it off (using
-DIDENTPROTO=0 in the Makefile). From der Mouse.
Fix YP_MASTER_NAME store to use the unupdated result of
gethostname() (instead of myhostname(), which tries
to fully qualify the name) to be consistent with
SunOS. If your hostname is unqualified, this fixes
transfers to slave servers. Bug noted by Keith
McMillan of Ameritech Services, Inc.
Fix Ultrix problem: gethostbyname() can return a very large
(> 500) h_length field, which causes the sockaddr
to be trashed. Use the size of the sockaddr instead.
Fix from Bob Manson of Ohio State.
Don't assume "-a." on host lookups if NAMED_BIND is not
defined -- this confuses gethostbyname on hosts
file lookups, which doesn't understand the trailing
dot convention.
Log SMTP server subprocesses that die with a signal instead
of from a clean exit.
If you don't have option "I" set, don't assume that a DNS
"host unknown" message is authoritative -- it
might still be found in /etc/hosts.
Fix a problem that would cause Deferred: messages to be sent
as the subject of an error message, even though the
actual cause of a message was more severe than that.
Problem noted by Chris Seabrook of OSSI.
Fix race condition in DBM alias file locking. From Kyle
Jones of UUNET.
Limit delivery syslog line length to avoid bugs in some
versions of syslog(3). This adds a new compile time
variable SYSLOG_BUFSIZE. From Jay Plett of Princeton
University, which is in turn derived from IDA.
Fix quotes inside of comments in addresses -- previously
it insisted that they be balanced, but the 822 spec
says that they should be ignored.
Dump open file state to syslog upon receiving SIGUSR1 (for
debugging). This also evaluates ruleset 89, if set
(with the null input), and logs the result. This
should be used sparingly, since the rewrite process
is not reentrant.
Change -qI, -qR, and -qS flags to be case-insensitive as
documented in the Bat Book.
If the mailer returned EX_IOERR or EX_OSERR, sendmail did not
return an error message and did not requeue the message.
Fix based on code from Roland Dirlewanger of
Reseau Regional Aquarel, Bordeaux, France.
Fix a problem that caused a seg fault if you got a 421 error
code during some parts of connection initialization.
I've only seen this when talking to buggy mailers on
the other end, but it shouldn't give a seg fault in
any case. From Amir Plivatsky.
Fix core dump caused by a ruleset call that returns null.
Fix from Bryan Costales of ICSI.
Full-Name: field was being ignored. Fix from Motonori Nakamura
of Kyoto University.
Fix a possible problem with very long input lines in setproctitle.
From P{r Emanuelsson.
Avoid putting "This is a warning message" out on return receipts.
Suggested by Douglas Anderson.
Detect loops caused by recursive ruleset calls. Suggested by
Bryan Costales.
Initialize non-alias maps during alias rebuilds -- they may be
needed for parsing. Problem noted by Douglas Anderson.
Log sender address even if no message was collected in SMTP
(e.g., if all RCPTs failed). Suggested by Motonori
Nakamura.
Don't reflect the owner-list contents into the envelope sender
address if the value contains ", :, /, or | (to avoid
illegal addresses appearing there).
Efficiency hack for toktype macro -- from Craig Partridge of
BB&N.
Clean up DNS error printing so that a host name is always
included.
Remember to set $i during queue runs. Reported by Stephen
Campbell of Dartmouth University.
If the environment variable HOSTALIASES is set, use it during
canonification as the name of a file with per-user host
translations so that headers are properly mapped. Reported
by Anne Bennett of Concordia University.
Avoid printing misleading error message if SMTP mailer (not
using [IPC]) should die on a core dump.
Avoid incorrect diagnosis of "file 1 closed" when it is caused
by the other end closing the connection. From
Dave Morrison of Oracle.
Improve several of the error messages printed by "mailq"
to include a host name or other useful information.
Add NetInfo preliminary support for NeXT systems. From Vince
DeMarco.
Fix a glitch that sometimes caused :include:s that pointed to
NFS filesystems that were down to give an "aliasing/
forwarding loop broken" message instead of queueing
the message for retry. Noted by William C Fenner of
the NRL Connection Machine Facility.
Fix a problem that could cause a core dump if the input sequence
had (or somehow acquired) a 231 character.
Make sure that route-addrs always have <angle brackets> around
them in non-SMTP envelopes (SMTP envelopes already do
this properly).
Avoid weird headers on unbalanced punctuation of the form:
``Joe User <user)'' -- this caused reference to the
null macro. Fix from Rick McCarty of IO.COM.
Fix a problem that caused an alias "user: user@local.host" to
not have the QNOTREMOTE bit set; this caused configs
to act as if FEATURE(notsticky) was defined even when
it was not. The effect of the problem was to make it
very hard to to set up satellite sites that had a few
local accounts, with everything else forwarded to a
corporate hub. Reported by Detlef Drewanz of the
University of Rostock and Mark Frost of NCD.
Change queuing to not call rulesets 3, {1 or 2}, 4 on header
addresses. This is more efficient (fewer name server
calls) and fixes certain unusual configurations, such
as those that have ruleset 4 do something that is
non-idempotent unless a mailer-specific ruleset did
something else. Problem reported by Brian J. Coan
of the Institute for Global Communications.
Fix the "obsolete argument" routine in main to better understand
new arguments. For example, if you used ``sendmail
-C config -v -q'' it would choke on the -q because
the -C would stop looking for old-format arguments.
Fix the code that was intended to allow two users to forward their
mail to the same program and have them appear unique.
Portability fixes for:
SCO UNIX from Murray Kucherawy.
SCO Open Server 3.2v4 from Philippe Brand.
System V Release 4 from Rick Ellis and others.
OSF/1 from Steve Campbell.
DG/UX from Ben Mesander of the USGS and Bryan Curnutt
of Stoner Associates.
Motorola SysV88 from Kevin Johnson of Motorola.
Solaris 2.3 from Casper H.S. Dik of the University
of Amsterdam and John Caruso of University
of Maryland.
FreeBSD from Ollivier Robert.
NetBSD from Adam Glass.
TitanOS from Kate Hedstrom of Rutgers University.
Irix from Bryan Curnutt.
Dynix from Jim Davis of the University of Arizona.
RISC/os.
Linux from John Kennedy of California State University
at Chico.
Solaris 2.x from Tony Boner of the U.S. Air Force.
NEXTSTEP 3.x from Vince DeMarco.
HP-UX from various people. NOTA BENE: the location
of the config file has moved to /usr/lib
to match the HP-UX version of sendmail.
CONFIG: Don't do any recipient rewriting on relay mailer;
since this is intended only for internal use, the
usual RFC 821/822/1123 rules can be relaxed. The
main point of this is to avoid munging (ugh) UUCP
addresses when relaying internally.
CONFIG: fix typo in mailer/uucp.m4 that mutilates list:;
syntax addresses delivered via UUCP. Solution
provided by Peter Wemm.
CONFIG: fix thumb-fumble in default UUCP relaying in ruleset
zero; it caused double @ signs in addresses. From
Irving Reid of the University of Toronto.
CONFIG: Portability fixes for SCO Unix 3.2 with TCP/IP 1.2.1
from Markku Toijala of ICL Personal Systems Oy.
CONFIG: Add trailing "." on pseudo-domains for consistency;
this fixes a problem (noted by Al Whaley of Sunnyside)
that made it hard to recognize your own pseudodomain
names.
CONFIG: catch "@host" syntax errors (i.e., null local-parts)
rather than letting them get "local configuration
error"s. Problem noted by John Gardiner Myers.
CONFIG: add uucp-uudom mailer variant, based on code posted
by Spider Boardman <spider@Orb.Nashua.NH.US>; this
has uucp-dom semantics but old UUCP syntax. This
also permits "uucp-old" as an alias for "uucp" and
"uucp-new" as a synonym for "suucp" for consistency.
CONFIG: add POP mailer support (from Kimmo Suominen
<kim@grendel.lut.fi>).
CONFIG: drop CSNET_RELAY support -- CSNET is long gone.
CONFIG: fix bug caused with domain literal addresses (e.g.,
``[128.32.131.12]'') when FEATURE(allmasquerade)
was set; it would get an additional @masquerade.host
added to the address. Problem noted by Peter Wan
of Georgia Tech.
CONFIG: make sure that the local UUCP name is in $=w. From
Jim Murray of Stratus.
CONFIG: changes to UUCP rewriting to simulate IDA-style "V"
mailer flag. Briefly, if you are sending to host
"foo", then it rewrites "foo!...!baz" to "...!baz",
"foo!baz" remains "foo!baz", and anything else has
the local name prepended.
CONFIG: portability fixes for HP-UX.
DOC: several minor problems fixed in the Install & Op Guide.
MAKEMAP: fix core dump problem on lines that are too long or
which lack newline. From Mark Delany.
MAILSTATS: print sums of columns (total messages & kbytes
in and out of the system). From Tom Ferrin of UC
San Francisco Computer Graphics Lab.
SIGNIFICANT USER- OR SYSAD-VISIBLE CHANGES:
On HP-UX, /etc/sendmail.cf has been moved to
/usr/lib/sendmail.cf to match HP sendmail.
Permissions have been tightened up on world-writable
:include: files and accounts that have shells
that are not listed in /etc/shells. This may
cause some .forward files that have worked
before to start failing.
SIGUSR1 dumps some state to the log.
NEW FILES:
src/Makefile.DGUX
src/Makefile.Dynix
src/Makefile.FreeBSD
src/Makefile.Mach386
src/Makefile.NetBSD
src/Makefile.RISCos
src/Makefile.SCO
src/Makefile.SVR4
src/Makefile.Titan
cf/mailer/pop.m4
cf/ostype/bsdi1.0.m4
cf/ostype/dgux.m4
cf/ostype/dynix3.2.m4
cf/ostype/sco3.2.m4
makemap/Makefile.dist
praliases/Makefile.dist
8.6.4/8.6.4 1993/10/31
Repair core-dump problem (write to read-only memory segment)
if you fall back to the return-to-Postmaster case in
savemail. Problem reported by Richard Liu.
Immediately diagnose bogus sender addresses in SMTP. This
makes quite certain that crackers can't use this
class of attack.
Reliability Fix: check return value from fclose() and fsync()
in a few critical places.
Minor problem in initsys() that reversed a condition for
redirecting the output channel on queue runs. It's
not clear this code even does anything. From Eric
Wassenaar of the Dutch National Institute for Nuclear
and High-Energy Physics.
Fix some problems that caused queue runs to do "too much work",
such as double-reading the Errors-To: header. From
Eric Wassenaar.
Error messages on writing the temporary file (including the
data file) were getting suppressed in SMTP -- this
fix causes them to be properly reported. From Eric
Wassenaar.
Some changes to support AF_UNIX sockets -- this will only
really become relevant in the next release, but some
people need it for local patches. From Michael
Corrigan of UC San Diego.
Use dynamically allocated memory (instead of static buffers)
for macros defined in initsys() and settime(); since
these can have different values depending on which
envelope they are in. From Eric Wassenaar.
Improve logging to show ctladdr on to= logging; this tells you
what uid/gid processes ran as.
Fix a problem that caused error messages to be discarded if
the sender address was unparseable for some reason;
this was supposed to fall back to the "return to
postmaster" case.
Improve aliaswait backoff algorithm.
Portability patches for Linux (8.6.3 required another header
file) (from Karl London) and SCO UNIX.
CONFIG: patch prog mailer to not strip host name off of envelope
addresses (so that it matches local again). From
Christopher Davis.
CONFIG: change uucp-dom mailer so that "<>" translates to $n;
this prevents uux from seeing lines with null names like
``From Sat Oct 30 14:55:31 1993''. From Motonori
Nakamura of Kyoto University.
CONFIG: handle <list:;> syntax correctly. This isn't legal, but
it shouldn't fail miserably. From Motonori Nakamura.
8.6.2/8.6.2 1993/10/15
Put a "successful delivery" message in the transcript for
addresses that get return-receipts.
Put a prominent "this is only a warning" message in warning
messages -- some people don't read carefully enough
and end up sending the message several times.
Include reason for temporary failure in the "warning" return
message. Currently, it just says "cannot send for
four hours".
Fix the "Original message received" time generated for
returntosender messages. It was previously listed as
the current time. Bug reported by Eric Hagberg of
Cornell University Medical College.
If there is an error when writing the body of a message,
don't send the trailing dot and wait for a response
in sender SMTP, as this could cause the connection to
hang up under some bizarre circumstances. From Eric
Wassenaar.
Fix some server SMTP synchronization problems caused when
connections fail during message collection. From
Eric Wassenaar.
Fix a problem that can cause srvrsmtp to reject mail if the
name server is down -- it accepts the RCPT but rejects
the DATA command. Problem reported by Jim Murray of
Stratus.
Fix a problem that can cause core dumps if the config file
incorrectly resolves to a null hostname. Reported by
Allan Johannesen of WPI.
Non-root use of -C flag, dangerous -f flags, and use of -oQ
by non-root users were not put into
X-Authentication-Warning:s as intended because the
config file hadn't set the PrivacyOptions yet. Fix
from Sven-Ove Westberg of the University of Lulea.
Under very odd circumstances, the alias file rebuild code
could get confused as to whether a database was
open or not.
Check "vendor code" on the end of V lines -- this is
intended to provide a hook for vendor-specific
configuration syntax. (This is a "new feature",
but I've made an exception to my rule in a belief
that this is a highly exceptional case.)
Portability fixes for DG/UX (from Douglas Anderson of NCSC),
SCO Unix (from Murray Kucherawy), A/UX, and OSF/1
(from Jon Forrest of UC Berkeley)
CONFIG: fix ``mailer:host'' form of UUCP relay naming.
8.6.1/8.6 1993/10/08
Portability fixes for A/UX and Encore UMAX V.
Fix error message handling -- if you had a name server down
causing an error during parsing, that message was never
propagated to the queue file.
8.6/8.6 1993/10/05
Configuration cleanup: make it easier to undo IDENTPROTO in
conf.h (other systems have the same bug).
If HASGETDTABLESIZE and _SC_OPEN_MAX are both defined, assume
getdtablesize() instead of sysconf(); a disturbingly
large number of systems defined _SC_OPEN_MAX in the
header files but don't have the syscall.
Another patch to really truly ignore MX records in getcanonname
if trymx == FALSE.
Fix problem that caused the "250 IAA25499 Message accepted for
delivery" message to be omitted if there was an error
in the header of the message (e.g., a bad Errors-To:
line). Pointed out by Michael Corrigan of UCSD.
Announce name of host we are chatting when we get errors; this
is an IDA-ism suggested by Christophe Wolfhugel.
Portability fixes for Alpha OSF/1 (from Anthony Baxter of the
Australian Artificial Intelligence Institute), SCO Unix
(from Murray Kucherawy of Hookup Communication Corp.),
NeXT (from Vince DeMarco and myself), Linux (from
Karl London <karl@borg.demon.co.uk>), BSDI (from
Christophe Wolfhugel, and SVR4 on Dell (from Kimmo
Suominen), AUX 3.0 on Macintosh, and ANSI C compilers.
Some changes to get around gcc optimizer bugs. From Takahiro
Kanbe.
Fix error recovery in queueup if another tf file of the same
name already exists. Problem stumbled over by Bill
Wisner of The Well.
Output YP_MASTER_NAME and YP_LAST_MODIFIED without null bytes.
Problem noted by Keith McMillan of Ameritech Services.
Deal with group permissions properly when opening .forward and
:include: files. This relaxes the 8.1C restrictions
slightly more. This includes proper setting of groups
when reading :include: files, allowing you to read some
files that you should be able to read but have previously
been denied unless you owned them or they had "other"
read permission.
Make certain that $j is in $=w (after the .cf is read) so that
if the user is forced to override some silly system,
MX suppression will still work.
Fix a couple of efficiency problems where newstr was double-
calling expensive routines. In at least one case, it
wasn't guaranteed that they would always return the
same result. Problem noted by Christophe Wolfhugel.
Fix null pointer dereference in putoutmsg -- only on an error
condition from a non-SMTP mailer. From Motonori
Nakamura.
Macro expand "C" line class definitions before scanning so that
"CX $Z" works.
Fix problem that caused error message to be sent while still
trying to send the original message if the connection
is closed during a DATA command after getting an error
on an RCPT command (pretty obscure). Problem reported
by John Myers of CMU.
Fix reply to NOOP to be 250 instead of 200 -- this is a long
term bug.
Fix a nasty bug causing core dumps when returning the "warning:
cannot deliver for N hours -- will keep trying" message;
it only occurred if you had PostmasterCopy set and
only on some architectures. Although sendmail would
keep trying, it would send error messages on each
queue interval. This is an important fix.
Allow u and g options to take user and group names respectively.
Don't do a chdir into the queue directory in -bt mode to make
ruleset testing a bit easier.
Don't allow users to turn off logging (using -oL) on the command
line -- command line can only raise, not lower, logging
level.
Set $u to the original recipient on the SMTP transaction or on
the command line. This is only done if there is exactly
one recipient. Technically, this does not meet the
specs, because it does not guarantee a domain on the
address.
Fix a problem that dumped error messages on bad addresses if
you used the -t flag. Problem noted by Josh Smith of
Harvey Mudd College.
Given an address such as ``<foo> <bar>'', auto-quote the first
``<foo>'' part, giving ``"<foo>" <bar>''. This is to
avoid the problem of people who use angle brackets in
their full name information.
Fix a null pointer dereference if you set option "l", have
an Errors-To: header in the message, and have Errors-To:
defined in the config file H lines. From J.R. Oldroyd.
Put YPCOMPAT on #ifdef NIS instead -- it's one less thing to get
wrong when compiling. Suggested by Rick McCarty of TI.
Fix a problem that could pass negative SIZE parameter if the
df file got lost; this would cause servers to always
give a temporary failure, making the problem even worse.
Problem noted by Allan Johannesen of WPI.
Add "ident" timeout (one of the "r" option selectors) for IDENT
protocol timeouts (30s default). Requested by Murray
Kucherawy of HookUp Communication Corp. to handle bogus
PC TCP/IP implementations.
Change $w default definition to be just the first component of
the domain name on config level 5. The $j macro defaults
to the FQDN; $m remains as before. This lets well-behaved
config files use any of the short, long, or subdomain
names.
Add makesendmail script in src to try to automate multi-architecture
builds. I know, this is sub-optimal, but it is still
helpful.
Fix very obscure race condition that can cause a queue run to
get a queue file for an already completed job. This
problem has existed for years. Problem noted by the
long suffering Allan Johannesen of WPI.
Fix a problem that caused the raw sender name to be passed to
udbsender instead of the canonified name -- this caused
it to sometimes miss records that it should have found.
Relax check of name on HELO packet so that a program using -bs
that claims to be itself works properly.
Restore rewriting of $: part of address through 2, R, 4 in
buildaddr -- this requires passing a lot of flags to get
it right. Unlike old versions, this ONLY rewrites
recipient addresses, not sender addresses.
Fix a bug that caused core dumps in config files that cannot
resolve /file/name style addresses. Fix from Jonathan
Kamens of OpenVision Technologies.
Fix problem with fcntl locking that can cause error returns to
be lost if the lock is lost; this required fully
queueing everything, dropping the envelope (so errors
would get returned), and then re-reading the queue from
scratch.
Fix a problem that caused aliases that redefine an otherwise
true address to still send to the original address
if and only if the alias failed in certain bizarre
ways (e.g, if they pointed at a list:; syntax address).
Problem pointed out by Jonathan Kamens.
Remove support for frozen configuration files. They caused
more trouble than it was worth.
Fix problem that can cause error messages to get ignored when
using both -odb and -t flags. Problem noted by Rob
McNicholas at U.C. Berkeley.
Include all "normal" variations on hostname in $=w. For example,
if the host name is vangogh.cs.berkeley.edu, $=w will
contain vangogh, vangogh.cs, and vangogh.cs.berkeley.edu.
Add "restrictqrun" privacy flag -- without this, anyone can run
the queue.
Reset SmtpPhase global on initial connection creation so that
messages don't come out with stale information.
Pass an "ext" argument to lockfile so that error/log messages
will properly reflect the true filename being locked.
Put all [...] address forms into $=w -- this eliminates the need
for MAXIPADDR in conf.h. Suggested by John Gardiner
Myers of CMU.
Fix a bug that can cause qf files to be left around even after
an SMTP RSET command. Problem and fix from Michael
Corrigan.
Don't send a PostmasterCopy to errors when the Precedence: is
negative. Error reports still go to the envelope
sender address.
Add LA_SHORT for load averages.
Lock sendmail.st file when posting statistics.
Add "SendBufSize" and "RcvBufSize" suboptions to "O" option to
set the size of the TCP send and receive buffers; if you
run over a slow slip line you may need to set these down
(although it would be better to fix the SLIP implementation
so that it's not necessary to recompile every program
that does bulk data transfer).
Allow null defaults on $( ... $) lookups. Problem reported by
Amir Plivatsky.
Diagnose crufty S and V config lines. This resulted from an
observation that some people were using the SITE macro
without the SITECONFIG macro first, which was causing
bogus config files that were not caught.
Fix makemap -f flag to turn off case folding (it was turning it
on instead). THIS IS A USER VISIBLE CHANGE!!!
Fix a problem that caused multiple error messages to be sent if
you used "sendmail -t -oem -odb", your system uses fcntl
locking, and one of the recipient addresses is unknown.
Reset uid earlier in include() so that recursive .forwards or
:include:s don't use the wrong uid.
If file descriptor 0, 1, or 2 was closed when sendmail was
called, the code to recover the descriptor was broken.
This sometimes (only sometimes) caused problems with the
alias file. Fix from Motonori Nakamura.
Fix a problem that caused aliaswait to go into infinite recursion
if the @:@ metasymbol wasn't found in the alias file.
Improve error message on newaliases if database files cannot be
opened or if running with no database format defined.
Do a better estimation of the size of error messages when NoReturn
is set. Problem noted by P{r (Pell) Emanuelsson.
Fix a problem causing the "c" option (don't connect to expensive
mailers) to be ignored in SMTP. Problem noted and the
solution suggested by Robert Elz of The University of
Melbourne.
Improve connection caching algorithm by passing "[host]" to
hostsignature, which strips the square brackets and
returns the real name. This allows mailertable entries
to match regular entries.
Re-enable Return-Receipt-To: -- people seem to want this stupid
feature, even if it doesn't work right.
Catch and log attempts to try the "wiz" command in server SMTP.
This also ups the log level from LOG_NOTICE to LOG_CRIT.
Be more generous at assigning $z to the home directory -- do this
for programs that are specified through a .forward file.
Fix from Andrew Chang of Sun Microsystems.
Always save a fatal error message in preference to a non-fatal
error message so that the "subject" line of return
messages is the best possible.
CONFIG: reduce the number of quotes needed to quote configuration
parameters with commas: two quotes should work now, e.g.,
define(ALIAS_FILE, ``/etc/aliases,/etc/aliases.local'').
CONFIG: class $=Z is a set of UUCP hosts that use uucp-dom
connections (domain-ized UUCP).
CONFIG: fix bug in default maps (-o must be before database file
name). Pointed out by Christophe Wolfhugel.
CONFIG: add FEATURE(nodns) to state that we are not relying on
DNS. This would presumably be used in UUCP islands.
CONFIG: add OSTYPE(nextstep) and OSTYPE(linux).
CONFIG: log $u in Received: line. This is in technical violation
of the standards, since it doesn't guarantee a domain
on the address.
CONFIG: don't assume "m" in local mailer flags -- this means that
if you redefine LOCAL_MAILER_FLAGS you will have to include
the "m" flag should you want it. Apparently some Solaris 2.2
installations can't handle multiple local recipients.
Problem noted by Josh Smith.
CONFIG: add confDOMAIN_NAME to set $j (if undefined, $j defaults).
CONFIG: change default version level from 4 to 5.
CONFIG: add FEATURE(nullclient) to create a config file that
forwards all mail to a hub without ever looking at the
addresses in any detail.
CONFIG: properly strip mailer: information off of relays when
used to change .BITNET form into %-hack form.
CONFIG: fix a problem that caused infinite loops if presented
with an address such as "!foo".
CONFIG: check for self literal (e.g., [128.32.131.12]) even if
the reverse "PTR" mapping is broken. There's a better
way to do this, but the change is fairly major and I
want to hold it for another release. Problem noted by
Bret Marquis.
8.5/8.5 1993/07/23
Serious bug: if you used a command line recipient that was unknown
sendmail would not send a return message (it was treating
everything as though it had an SMTP-style client that
would do the return itself). Problem noted by Josh Smith.
Change "trymx" option in getcanonname() to ignore all MX data,
even during a T_ANY query. This actually didn't break
anything, because the only time you called getcanonname
with !trymx was if you already knew there were no MX
records, but it is somewhat cleaner. From Motonori
Nakamura.
Don't call getcanonname from getmxrr if you already know there
are no DNS records matching the name.
Fix a problem causing error messages to always include "The
original message was received ... from localhost".
The correct original host information is now included.
Previous change to cf/sh/makeinfo.sh doesn't port to Ultrix (their
version of "test" doesn't have the -x flag). Change it
to use -f instead. From John Myers.
CONFIG: 8.4 mistakenly set the default SMTP-style mailer to
esmtp -- it should be smtp.
CONFIG: send all relayed mail using confRELAY_MAILER (defaults
to "relay" (a variant of "smtp") if MAILER(smtp) is used,
else "suucp" if MAILER(uucp) is used, else "unknown");
this cleans up the configs somewhat. This fixes a serious
problem that caused route-addrs to get mistaken as relays,
pointed out by John Myers. WARNING: this also causes
the default on SMART_HOST to change from "suucp" to
"relay" if you have MAILER(smtp) specified.
8.4/8.4 1993/07/22
Add option `w'. If you receive a message that comes to you because
you are the best (lowest preference) target of an MX, and
you haven't explicitly recognized the source MX host in
your .cf file, this option will cause you to try the target
host directly (as if there were no MX for it at all). If
`w' is not set, this case is a configuration error.
Beware: if `w' is set, senders may get bogus errors like
"message timed out" or "host unknown" for problems that
are really configuration errors. This option is
disrecommended, provided only for compatibility with
UIUC sendmail.
Fix a problem that caused the incoming socket to be left open
when sendmail forks after the DATA command. This caused
calling systems to wait in FIN_WAIT_2 state until the
entire list was processed and the child closed -- a
potentially prodigious amount of time. Problem noted
by Neil Rickert.
Fix problem (created in 6.64) that caused mail sent to multiple
addresses, one of which was a bad address, to completely
suppress the sending of the message. This changes
handling of EF_FATALERRS somewhat, and adds an
EF_GLOBALERRS flag. This also fixes a potential problem
with duplicate error messages if there is a syntax error
in the header of a message that isn't noticed until late
in processing. Original problem pointed out by Josh Smith
of Harvey Mudd College. This release includes quite a bit
of dickering with error handling (see below).
Back out SMTP transaction if MAIL gets nested 501 error. This
will only hurt already-broken software and should help
humans.
Fix a problem that broke aliases when neither NDBM nor NEWDB were
compiled in. It would never read the alias file.
Repair unbalanced `)' and `>' (the "open" versions are already
repaired).
Logging of "done" in dropenvelope() was incorrect: it would
log this even when the queue file still existed. Change
this to only log "done" (at log level 11) when the
queue file is actually removed. From John Myers.
Log "lost connection" in server SMTP at log level 20 if there
is no pending transaction. Some senders just close the
connection rather than sending QUIT.
Fix a bug causing getmxrr to add a dot to the end of unqualified
domains that do not have MX records -- this would cause
the subsequent host name lookup to fail. The problem
only occurred if you had FEATURE(nocanonify) set.
Problem noted by Rick McCarty of Texas Instruments.
Fix invocation of setvbuf when passed a -X flag -- I had
unwittingly used an ANSI C extension, and this caused
core dumps on some machines.
Diagnose self-destructive alias loops on RCPT as well as EXPN.
Previously it just gave an empty send queue, which
then gave either "Need RCPT (recipient)" at the DATA
(confusing, since you had given an RCPT command which
returned 250) or just dropped the email, depending on
whether you were running VERBose mode. Now it usually
diagnoses this case as "aliasing/forwarding loop broken".
Unfortunately, it still doesn't adequately diagnose
some true error conditions.
Add internal concept of "warning messages" using 6xx codes.
These are not reported only to Postmaster. Unbalanced
parens, brackets, and quotes are printed as 653 codes.
They are always mapped to 5xx codes before use in SMTP.
Clean up error messages to tell both the actual address that
failed and the alias they arose from. This makes it
somewhat easier to diagnose problems. Difficulty noted
by Motonori Nakamura.
Fix a problem that inappropriately added a ctladdr to addresses
that shouldn't have had one during a queue run. This
caused error messages to be handled differently during
a queue run than a direct run.
Don't print the qf name and line number if you get errors during
the direct run of the queue from srvrsmtp -- this was
just extra stuff for users to crawl through.
Put command line flags on second line of pid file so you can
auto-restart the daemon with all appropriate arguments.
Use "kill `head -1 /etc/sendmail.pid`" to stop the
daemon, and "eval `tail -1 /etc/sendmail.pid`" to
restart it.
Remove the ``setuid(getuid())'' in main -- this caused the
IDENT daemon to screw up. This required that I change
HASSETEUID to HASSETREUID and complicate the mode
changing somewhat because both Ultrix and SunOS seem
to have a bug causing seteuid() to set the saved uid
as well as the effective. The program test/t_setreuid.c
will test to see if your implementation of setreuid(2)
is appropriately functional.
The FallBackMX (option V) handling failed to properly identify
fallback to yourself -- most of the code was there,
but it wasn't being enabled. Problem noted by Murray
Kucherawy of the University of Waterloo.
Change :include: open timeout from ETIMEDOUT to an internal
code EOPENTIMEOUT; this avoids adding "during SmtpPhase
with CurHostName" in error messages, which can be
confusing. Reported by Jonathan Kamens of OpenVision
Technologies.
Back out setpgrp (setpgid on POSIX systems) call to reset the
process group id. The original fix was to get around
some problems with recalcitrant MUAs, but it breaks
any call from a shell that creates a process group id
different from the process id. I could try to fix
this by diddling the tty owner (using tcsetpgrp or
equivalent) but this is too likely to break other
things.
Portability changes:
Support -M as equivalent to -oM on Ultrix -- apparently
DECnet calls sendmail with -MrDECnet -Ms<HOST> -bs
instead of using standard flags. Oh joy. This
behavior reported by Jon Giltner of University
of Colorado.
SGI IRIX -- this includes several changes that should
help other strict ANSI compilers.
SCO Unix -- from Murray Kucherawy of HookUp Communication
Corporation.
Solaris running the Sun C compiler (which despite the
documentation apparently doesn't define
__STDC__ by default).
ConvexOS from Eric Schnoebelen of Convex.
Sony NEWS workstations and Omron LUNA workstations from
Motonori Nakamura.
CONFIG: add confTRY_NULL_MX_LIST to set option `w'.
CONFIG: delete `C' and `e' from default SMTP mailers flags;
several people have made a good argument that this
creates more problems than it solves (although this
may prove painful in the short run).
CONFIG: generalize all the relays to accept a "mailer:host"
format.
CONFIG: move local processing in ruleset 0 into a new ruleset
98 (8 on old sendmail). Domain literal [a.b.c.d]
addresses are also passed through this ruleset.
CONFIG: if neither SMART_HOST nor MAILER(smtp) were defined,
internet-style addresses would "fall off the end" of
ruleset zero and be interpreted as local -- however,
the angle brackets confused the recursive call.
These are now diagnosed as "Unrecognized host name".
CONFIG: USENET rules weren't included in S0 because of a mistaken
ifdef(`_MAILER_USENET_') instead of
ifdef(`_MAILER_usenet_'). Problem found by Rein Tollevik
of SINTEF RUNIT, Oslo.
CONFIG: move up LOCAL_RULE_0 processing so that it happens very
early in ruleset 0; this allows .mc authors to bypass
things like the "short circuit" code for local addresses.
Prompted by a comment by Bill Wisner of The Well.
CONFIG: add confSMTP_MAILER to define the mailer used (smtp or
esmtp) to send SMTP mail. This allows you to default
to esmtp but use a mailertable or other override to
deal with broken servers. This logic was pointed out
to me by Bill Wisner. Ditto for confLOCAL_MAILER.
Changes to cf/sh/makeinfo.sh to make it portable to SVR4
environments. Ugly as sin.
8.3/8.3 1993/07/13
Fix setuid problems introduced in 8.2 that caused messages
like "Cannot create qfXXXXXX: Invalid argument"
or "Cannot reopen dfXXXXXX: Permission denied". This
involved a new compile flag "HASSETEUID" that takes
the place of the old _POSIX_SAVED_IDS -- it turns out
that the POSIX interface is broken enough to break
some systems badly. This includes some fixes for
HP-UX. Also fixes problems where the real uid is
not reset properly on startup (from Neil Rickert).
Fix a problem that caused timed out messages to not report the
addresses that timed out. Error messages are also more
"user friendly".
Drop required bandwidth on connections from 64 bytes/sec to
16 bytes/sec.
Further Solaris portability changes -- doesn't require the BSD
compatibility library. This also adds a new
"HASGETDTABLESIZE" compile flag which can be used if
you want to use getdtablesize(2) instead of sysconf(2).
These are loosely based on changes from David Meyer at
University of Oregon. This now seems to work, at least
for quick test cases.
Fix a problem that can cause duplicate error messages to be
sent if you are in SMTP, you send to multiple addresses,
and at least one of those addresses is good and points
to an account that has a .forward file (whew!).
Fix a problem causing messages to be discarded if checkcompat()
returned EX_TEMPFAIL (because it didn't properly mark
the "to" address). Problem noted by John Myers.
Fix dfopen to return NULL if the open failed; I was depending
on fdopen(-1) returning NULL, which isn't the case. This
isn't serious, but does result in weird error diagnoses.
From Michael Corrigan.
CONFIG: add UUCP_MAX_SIZE M4 macro to set the maximum size of
messages sent through UUCP-family mailers. Suggested
by Bill Wisner of The Well.
CONFIG: if both MAILER(uucp) and MAILER(smtp) are specified,
include a "uucp-dom" mailer that uses domain-style
addressing. Suggested by Bill Wisner.
CONFIG: Add LOCAL_SHELL_FLAGS and LOCAL_SHELL_ARGS to match
LOCAL_MAILER_FLAGS and LOCAL_MAILER_ARGS. Suggested by
Christophe Wolfhugel.
CONFIG: Add OSTYPE(aix3). From Christophe Wolfhugel.
8.2/8.2 1993/07/11
Don't drop out on config file parse errors in -bt mode.
On older configuration files, assume option "l" (use Errors-To
header) for back compatibility. NOTE: this DOES NOT
imply an endorsement of the Errors-To: header in any way.
Accept -x flag on AIX-3 as well as OSF/1. Why, why, why???
Don't log errors on EHLO -- it isn't a "real" error for an old
SMTP server to give an error on this command, and
logging it in the transcript can be confusing. Fix
from Bill Wisner.
IRIX compatibility changes provided by Dan Rich
<drich@sandman.lerc.nasa.gov>.
Solaris 2 compatibility changes. Provided by Bob Cunningham
<bob@kahala.soest.hawaii.edu>, John Oleynick
<juo@klinzhai.rutgers.edu>
Debugging: -d17 was overloaded (hostsignature and usersmtp.c);
move usersmtp (smtpinit and smtpmailfrom) to -d18 to
match the other flags in that file.
Flush transcript before fork in mailfile(). From Eric Wassenaar.
Save h_errno in mci struct and improve error message display.
Changes from Eric Wassenaar.
Open /dev/null for the transcript if the create of the xf file
failed; this avoids at least one possible null pointer
reference in very weird cases. From Eric Wassenaar.
Clean up statistics gathering; it was over-reporting because of
forks. From Eric Wassenaar.
Fix problem that causes old Return-Path: line to override new
Return-Path: line (conf.c needs H_FORCE to avoid
re-using old value). From Motonori Nakamura.
Fix broken -m flag in K definition -- even if -m (match only)
was specified, it would still replace the key with the
value. Noted by Rick McCarty of Texas Instruments.
If the name server timed out over several days, no "timed out"
message would ever be sent back. The timeout code
has been moved from markfailure() to dropenvelope()
so that all such failures should be diagnosed. Pointed
out by Christophe Wolfhugel and others.
Relax safefile() constraints: directories in an include or
forward path must be readable by self if the controlling
user owns the entry, readable by all otherwise (e.g.,
when reading your .forward file, you have to own and
have X permission in it; everyone needs X permission in
the root and directories leading up to your home);
include files must be readable by anyone, but need not
be owned by you.
If _POSIX_SAVED_IDS is defined, setuid to the owner before
reading a .forward file; this gets around some problems
on NFS mounts if root permission is not exported and
the user's home directory isn't x'able.
Additional NeXT portability enhancements from Axel Zinser.
Additional HP-UX portability enhancements from Brian Bullen.
Add a timeout around SMTP message writes; this assumes you can
get throughput of at least 64 bytes/second. Note that
this does not impact the "datafinal" default, which
is separate; this is just intended to work around
network clogs that will occur before the final dot
is sent. From Eric Wassenaar.
Change map code to set the "include null" flag adaptively --
it initially tries both, but if it finds anything
matching without a null it never tries again with a
null and vice versa. If -N is specified, it never
tries without the null and creates new maps with a
null byte. If -O is specified, it never tries with
the null (for efficiency). If -N and -O are specified,
you get -NO (get it?) lookup at all, so this would
be a bad idea. If you don't specify either -N or -O,
it adapts.
Fix recognition of "same from address" so that MH submissions
will insert the appropriate full name information;
this used to work and got broken somewhere along the
way.
Some changes to eliminate some unnecessary SYSERRs in the
log. For example, if you lost a connection, don't
bother reporting that fact on the connection you lost.
Add some "extended debugging" flags to try to track down
why we get occasional problems with file descriptor
one being closed when execing a mailer; it seems to
only happen when there has been another error in the
same transaction. This requires XDEBUG, defined
by default in conf.h.
Add "-X filename" command line flag, which logs both sides of
all SMTP transactions. This is intended ONLY for
debugging bad implementations of other mailers; start
it up, send a message from a mailer that is failing,
and then kill it off and examine the indicated log.
This output is not intended to be particularly human
readable. This also adds the HASSETVBUF compile
flag, defaulted on if your compiler defines __STDC__.
CONFIG: change SMART_HOST to override an SMTP mailer. If you
have a local net that should get direct connects, you
will need to use LOCAL_NET_CONFIG to catch these hosts.
See cf/README for an example.
CONFIG: add LOCAL_MAILER_ARGS (default: `mail -d $u') to handle
sites that don't use the -d flag.
CONFIG: hide recipient addresses as well as sender addresses
behind $M if FEATURE(allmasquerade) is specified; this
has been requested by several people, but can break
local aliases. For example, if you mail to "localalias"
this will be rewritten as "localalias@masqueradehost";
although initial delivery will work, replies will be
broken. Use it sparingly.
CONFIG: add FEATURE(domaintable). This maps unqualified domains
to qualified domains in headers. I believe this is
largely equivalent to the IDA feature of the same name.
CONFIG: use $U as UUCP name instead of $k. This permits you
to override the "system name" as your UUCP name --
in particular, to use domain-ized UUCP names. From
Bill Wisner of The Well.
CONFIG: create new mailer "esmtp" that always tries EHLO
first. This is currently unused in the config files,
but could be used in a mailertable entry.
8.1C/8.1B 1993/06/27
Serious security bug fix: it was possible to read any file on
the system, regardless of ownership and permissions.
If a subroutine returns a fully qualified address, return it
immediately instead of feeding it back into rewriting.
This fixes a problem with mailertable lookups.
CONFIG: fix some M4 frotz (concat => CONCAT)
8.1B/8.1A 1993/06/12
Serious bug fix: pattern matching backup algorithm stepped by
two tokens in classes instead of one. Found by Claus
Assmann at University of Kiel, Germany.
8.1A/8.1A 1993/06/08
Another mailertable fix....
8.1/8.1 1993/06/07
4.4BSD freeze. No semantic changes.