Changelog for 2.2.5 -> 2.2.6:
20050806
Workaround: accept(2) fails with EPROTO when the client
already disconnected (SunOS 5.5.1). File: sane_accept.c.
20050815
Workaround: old Solaris compilers can't link an archive
without globally visible symbols. File: tls/tls_misc.c.
20050922
Bugfix: the *SQL clients did not uniformly choose the
database host from the available pool of servers due to an
off-by-one error, so that the "last" available server was
not selected. Leandro Santi. Files: dict_mysql.c, dict_pgsql.c.
20050929
Paranoia: don't ignore garbage in SMTP or LMTP server replies
when ESMTP command pipelining is turned on. For example,
after sending ".<CR><LF>QUIT<CR><LF>", Postfix could recognize
the server's 2XX QUIT reply as a 2XX END-OF-DATA reply after
garbage, causing mail to be lost. The SMTP and LMTP clients
now report a remote protocol error and defer delivery.
Files: smtp/smtp_chat.c, smtp/smtp_trouble.c, lmtp/lmtp_chat.c,
lmtp/lmtp_trouble.c.
20051011
Bugfix: raise the "policy violation" flag when a client
request exceeds a concurrency or rate limit. File:
smtpd/smtpd.c.
Bugfix (cut-and-paste error): don't reply with 421 (too
many MAIL FROM or RCPT TO commands) when we aren't closing
the connection. File: smtpd/smtpd.c.
20051013
Bugfix: don't do smtpd_end_of_data_restrictions after the
transaction failed due to, e.g., a write error. File:
smtpd/smtpd.c.
Cleanup: the SMTP server now enforces the message_size_limit
even when the client did not send SIZE information with the
MAIL FROM command. This protects before-queue content
filters against over-size messages. File: smtpd/smtpd.c.
20051105
Workaround: the next-hop logical destination information
for connection caching was reset only after a good non-TLS
connection, so that cached connections to non-TLS backup
servers could suck away traffic from TLS primary servers
(the Postfix SMTP client cannot cache an open TLS connection).
Found during code review. Fixing this requires more change
than is allowed in a stable release. File: smtp/smtp_connect.c.
20051108
Bugfix: two messages could get the same message ID due to
a race condition. This time window was increased when queue
file creation was postponed from MAIL FROM until the first
accepted RCPT TO. The window is closed again. Found by
Victor. Files: global/mail_stream.c, global/mail_queue.c,
cleanup/cleanup_message.c. This code is back-ported from
the Postfix 2.3 snapshot release.
20051119
Bugfix: the queue manager did not write a per-recipient
defer logfile record when the delivery agent crashed after
the initial handshake with the queue manager, and before
reporting the delivery status to the queue manager. Files:
*qmgr/qmgr_deliver.c.
20051126
Log warning when REDIRECT, FILTER, HOLD and DISCARD are
used in smtpd_etrn_restrictions. File: smtpd/smtpd_check.c.
20051128
Bugfix: moved code around from one place to another to make
REDIRECT, FILTER, HOLD and DISCARD access(5) table actions
work in smtpd_end_of_data_restrictions. PREPEND will not
be fixed; it must be specified before the message content
is received. Files: smtpd/smtpd.c, smtpd/smtpd_check.c,
cleanup/cleanup_extracted.c, pickup/pickup.c.
This helps avoid postfix waking up an idle disk with mtime updates for
fifos. Evidently only fifos worked for these two in earlier postfix
versions, but now it works fine in my testing, and it also makes the
config consistent for all postfix services.
Thanks to Charles Hannum.
configuration to enable inbound mail reception.
This is in line with general security policy, so that postfix is
"safe" until other required configuration steps have been taken.
This way, systems enabling this mailer for local mail delivery only
won't be vulnerable to surprise exploits, being used as relays,
/var/mail filling up with spam, etc.
rpaulo