Sendmail - 8.14.0
Sendmail, Inc., and the Sendmail Consortium announce the availability of sendmail 8.14.0 which has two "big" new features:
- headers are 8 bit "transparent".
- the milter API has been extended; some of these new features are:
- New callback xxfi_negotiate() to determine the available
protocol actions and features of the MTA at runtime
and also to specify which of these a milter wants to use.
- New callback xxfi_data() for the DATA command.
- New callback xxfi_unknown() for unknown SMTP commands.
- New return code SMFIS_SKIP can be used in the xxfi_body()
callback to skip over further body chunks and directly advance
to the xxfi_eom() callback.
- A milter can be informed about rejected recipients too.
- A milter can now specify itself the list of macros it wants
to receive from the MTA.
For a full list of changes see the release notes down below.
Please send bug reports and general feedback to
one of the usual addresses.
The version can be found at
ftp://ftp.sendmail.org/pub/sendmail/sendmail.8.14.0.tar.gz
ftp://ftp.sendmail.org/pub/sendmail/sendmail.8.14.0.tar.gz.sig
ftp://ftp.sendmail.org/pub/sendmail/sendmail.8.14.0.tar.Z
ftp://ftp.sendmail.org/pub/sendmail/sendmail.8.14.0.tar.Z.sig
or on a mirror near to you.
MD5 signatures:
e2d1b6436e7354181122d865627b4db2 sendmail.8.14.0.tar.Z
ca0235dccb448057b1f617bd11f1e8b5 sendmail.8.14.0.tar.Z.sig
bc0dee396b8090b3f696e748a9caf83d sendmail.8.14.0.tar.gz
32cb8c617f7c3a0af1259161442d3960 sendmail.8.14.0.tar.gz.sig
Errata
- (2007-02-06)
Recipients that are rejected by a milter
are not removed from an internal list
and hence mail will be delivered to them
if the transaction is accepted.
A
preliminary patch
is available.
- Note: as the release notes state:
the MaxAliasRecursion limit may be reached too early,
e.g., the counter may be off by a factor of 4 in case of a sequence of
.forward files that refer to others.
This problem was not fixed,
which means you may have to set
MaxAliasRecursion
higher in some cases.
Since sendmail 8.11 and later includes hooks to cryptography, the
following information from OpenSSL applies to sendmail as well.
PLEASE REMEMBER THAT EXPORT/IMPORT AND/OR USE OF STRONG CRYPTOGRAPHY
SOFTWARE, PROVIDING CRYPTOGRAPHY HOOKS OR EVEN JUST COMMUNICATING
TECHNICAL DETAILS ABOUT CRYPTOGRAPHY SOFTWARE IS ILLEGAL IN SOME
PARTS OF THE WORLD. SO, WHEN YOU IMPORT THIS PACKAGE TO YOUR
COUNTRY, RE-DISTRIBUTE IT FROM THERE OR EVEN JUST EMAIL TECHNICAL
SUGGESTIONS OR EVEN SOURCE PATCHES TO THE AUTHOR OR OTHER PEOPLE
YOU ARE STRONGLY ADVISED TO PAY CLOSE ATTENTION TO ANY EXPORT/IMPORT
AND/OR USE LAWS WHICH APPLY TO YOU. THE AUTHORS ARE NOT LIABLE FOR
ANY VIOLATIONS YOU MAKE HERE. SO BE CAREFUL, IT IS YOUR RESPONSIBILITY.
SENDMAIL RELEASE NOTES
$Id: RELEASE_NOTES,v 8.1872 2007/02/01 00:37:43 ca Exp $
This listing shows the version of the sendmail binary, the version
of the sendmail configuration files, the date of release, and a
summary of the changes in that release.
8.14.0/8.14.0 2007/01/31
Header field values are now 8 bit clean. Notes:
- header field names are still restricted to 7 bit.
- RFC 2822 allows only 7 bit (US-ASCII) characters in
headers.
Preserve spaces after the colon in a header. Previously, any
number of spaces after the colon would be changed to
exactly one space.
In some cases of deeply nested aliases/forwarding, mail can
be silently lost. Moreover, the MaxAliasRecursion
limit may be reached too early, e.g., the counter
may be off by a factor of 4 in case of a sequence of
.forward files that refer to others. Patch from
Motonori Nakamura of Kyoto University.
Fix a regression in 8.13.8: if InputMailFilters is set then
"sendmail -bs" can trigger an assertion because the
hostname of the client is undefined. It is now set
to "localhost" for the xxfi_connect() callback.
Avoid referencing a freed variable during cleanup when terminating.
Problem reported and diagnosed by Joe Maimon.
New option HeloName to set the name for the HELO/EHLO command.
Patch from Nik Clayton.
New option SoftBounce to issue temporary errors (4xy) instead of
permanent errors (5xy). This can be useful for testing.
New suboptions for DaemonPortOptions to set them individually
per daemon socket:
DeliveryMode DeliveryMode
refuseLA RefuseLA
delayLA DelayLA
queueLA QueueLA
children MaxDaemonChildren
New option -K for LDAP maps to replace %1 through %9 in the
lookup key with the LDAP escaped contents of the
arguments specified in the map lookup. Loosely based
on patch from Wolfgang Hottgenroth.
Log the time after which a greet_pause delay triggered. Patch
from Nik Clayton.
If a client is rejected via TCP wrapper or some other check
performed by validate_connection() (in conf.c) then do
not also invoke greet_pause. Problem noted by Jim Pirzyk
of the University of Illinois at Urbana-Champaign.
If a client terminates the SMTP connection during a pause
introduced by greet_pause, then a misleading message
was logged previously. Problem noted by Vernon Schryver
et.al., patch from Matej Vela.
New command "mstat" for control socket to provide "machine
readable" status.
New named config file rule check_eom which is called at the end
of a message, its parameter is the size of the message.
If the macro {addr_type} indicates that the current address
is a header address it also distinguishes between
recipient and sender addresses (as it is done for
envelope addresses).
When a macro is set in check_relay, then its value is accessible
by all transactions in the same SMTP session.
Increase size of key for ldap lookups to 1024 (MAXKEY).
New option MaxNOOPCommands to override default of 20 for the
number of "useless" commands before the SMTP server will
slow down responding.
New option SharedMemoryKeyFile: if shared memory support is
enabled, the MTA can be asked to select a shared memory
key itself by setting SharedMemoryKey to -1 and specifying
a file where to store the selected key.
Try to deal with open HTTP proxies that are used to send spam
by recognizing some commands from them. If the first command
from the client is GET, POST, CONNECT, or USER, then the
connection is terminated immediately.
New PrivacyOptions noactualrecipient to avoid putting
X-Actual-Recipient lines in DSNs revealing the actual
account that addresses map to. Patch from Dan Harkless.
New options B, z, and Z for DNS maps:
-B: specify a domain that is always appended to queries.
-z: specify the delimiter at which to cut off the result of
a query if it is too long.
-Z: specify the maximum number of entries to be concatenated
to form the result of a lookup.
New target "check" in the Makefile of libsm: instead of running tests
implicitly while building libsm, they must be explicitly
started by using "make check".
Fixed some inconsistent checks for NULL pointers that have been
reported by the SATURN tool which has been developed by
Isil Dillig and Thomas Dillig of Stanford University.
Fix a potential race condition caused by a signal handler for
terminated child processes. Problem noted by David F. Skoll.
When a milter deleted a recipient, that recipient could cause a
queue group selection. This has been disabled as it was not
intended.
New operator 'r' for the arith map to return a random number.
Patch from Motonori Nakamura of Kyoto University.
New compile time option MILTER_NO_NAGLE to turn off the Nagle
algorithm for communication with libmilter ("cork" on Linux),
which may improve the communication performance on some
operating systems. Patch from John Gardiner Myers of
Proofpoint.
If sendmail received input that contained a CR without subsequent LF
(thus violating RFC 2821 (2.3.7)), it could previously
generate an additional blank line in the output as the last
line.
Restarting persistent queue runners by sending a HUP signal to
the "queue control process" (QCP) works now.
Increase the length of an input line to 12288 to deal with
really long lines during SMTP AUTH negotiations.
Problem noted by Werner Wiethege.
If ARPANET mode (-ba) was selected STARTTLS would fail (due to
a missing initialization call for that case). Problem
noted by Neil Rickert of Northern Illinois University.
If sendmail is linked against a library that initializes Cyrus-SASL
before sendmail did it (such as libnss-ldap), then SMTP AUTH
could fail for the sendmail client. A patch by Moritz Both
works around the API design flaw of Cyrus-SASLv2.
CONFIG: Make it possible to unset the StatusFile option by
undefining STATUS_FILE. By not setting StatusFile,
the MTA will not attempt to open a statistics file on
each delivery.
CONFIG: New FEATURE(`require_rdns') to reject messages from SMTP
clients whose IP address does not have proper reverse DNS.
Contributed by Neil Rickert of Northern Illinois University
and John Beck of Sun Microsystems.
CONFIG: New FEATURE(`block_bad_helo') to reject messages from SMTP
clients which provide a HELO/EHLO argument which is either
unqualified, or is one of our own names (i.e., the server
name instead of the client name). Contributed by Neil
Rickert of Northern Illinois University and John Beck of
Sun Microsystems.
CONFIG: New FEATURE(`badmx') to reject envelope sender addresses
(MAIL) whose domain part resolves to a "bad" MX record.
Based on contribution from William Dell Wisner.
CONFIG: New macros SMTP_MAILER_LL and RELAY_MAILER_LL to override
the maximum line length of the smtp mailers.
CONFIG: New option `relaytofulladdress' for FEATURE(`access_db')
to allow entries in the access map to be of the form
To:user@example.com RELAY
CONFIG: New subsuboptions eoh and data to specify the list of
macros a milter should receive at those stages in the
SMTP dialogue.
CONFIG: New option confHELO_NAME for HeloName to set the name
for the HELO/EHLO command.
CONFIG: dnsbl and enhdnsbl can now also discard or quarantine
messages by using those values as second argument.
Patches from Nelson Fung.
CONTRIB: cidrexpand uses a hash symbol as comment character and
ignores everything after it unless it is in quotes or
preceeded by a backslash.
DEVTOOLS: New macro confMKDIR: if set to a program that creates
directories, then it used for "make install" to create
the required installation directories.
DEVTOOLS: New macro confCCLINK to specify the linker to use for
executables (defaults to confCC).
LIBMILTER: A new version of the milter API has been created that
has several changes which are listed below and documented
in the webpages reachable via libmilter/docs/index.html.
LIBMILTER: The meaning of the version macro SMFI_VERSION has been
changed. It now refers only to the version of libmilter,
not to the protocol version (which is used only internally,
it is not user/milter-programmer visible). Additionally,
a version function smfi_version() has been introduced such
that a milter program can check the libmilter version also
at runtime which is useful if a shared library is used.
LIBMILTER: A new callback xxfi_negotiate() can be used to
dynamically (i.e., at runtime) determine the available
protocol actions and features of the MTA and also to
specify which of these a milter wants to use. This allows
for more flexibility than hardcoding these flags in the
xxfi_flags field of the smfiDesc structure.
LIBMILTER: A new callback xxfi_data() is available so milters
can act on the DATA command.
LIBMILTER: A new callback xxfi_unknown() is available so milters
can receive also unknown SMTP commands.
LIBMILTER: A new return code SMFIS_NOREPLY has been added which
can be used by the xxfi_header() callback provided the
milter requested the SMFIP_NOHREPL protocol action.
LIBMILTER: The new return code SMFIS_SKIP can be used in the
xxfi_body() callback to skip over further body chunks
and directly advance to the xxfi_eom() callback. This
is useful if a milter can make a decision based on the
body chunks it already received without reading the entire
rest of the body and the milter wants to invoke functions
that are only available from the xxfi_eom() callback.
LIBMILTER: A new function smfi_addrcpt_par() can be used to add
new recipients including ESMTP parameters.
LIBMILTER: A new function smfi_chgfrom() can be used to change the
envelope sender including ESMTP parameters.
LIBMILTER: A milter can now request to be informed about rejected
recipients (RCPT) too. This requires to set the protocol
flag SMFIP_RCPT_REJ during option negotiation. Whether
a RCPT has been rejected can be checked by comparing the
value of the macro {rcpt_mailer} with "error".
LIBMILTER: A milter can now override the list of macros that it
wants to receive from the MTA for each protocol step
by invoking the function smfi_setsymlist() during option
negotiation.
LIBMILTER: A milter can receive header field values with all
leading spaces by requesting the SMFIP_HDR_LEADSPC
protocol action. Also, if the flag is set then the MTA
does not add a leading space to headers that are added,
inserted, or replaced.
LIBMILTER: If a milter sets the reply code to "421" for the HELO
callback, the SMTP server will terminate the SMTP session
with that error to match the behavior of all other callbacks.
New Files:
cf/feature/badmx.m4
cf/feature/block_bad_helo.m4
cf/feature/require_rdns.m4
devtools/M4/UNIX/check.m4
include/sm/misc.h
include/sm/sendmail.h
include/sm/tailq.h
libmilter/docs/smfi_addrcpt_par.html
libmilter/docs/smfi_setsymlist.html
libmilter/docs/xxfi_data.html
libmilter/docs/xxfi_negotiate.html
libmilter/docs/xxfi_unknown.html
libmilter/example.c
libmilter/monitor.c
libmilter/worker.c
libsm/memstat.c
libsm/t-memstat.c
libsm/t-qic.c
libsm/util.c
sendmail/daemon.h
sendmail/map.h