[An on-line version of this announcement will be available at
http://www.postfix.org/announcements/postfix-2.9.0.html]
Postfix stable release 2.9.0 is available. The main changes in no
particular order are:
* Support for long, non-repeating, queue IDs (queue file names).
The main benefit of non-repeating names is simpler logfile
analysis. See the description of "enable_long_queue_ids" in
postconf(5) for details.
* Memcache client support, and support to share postscreen(8)
and verify(8) caches via the proxymap server. Details are in
memcache_table(5) and MEMCACHE_README.
* Gradual degradation: if a database is unavailable (can't open,
most read or write errors) a Postfix daemon will log a warning
and continue providing the services that don't depend on that
table, instead of immediately terminating with a fatal error.
To terminate immediately when a database file can't be opened,
specify "daemon_table_open_error_is_fatal = yes".
* Revised postconf(1) command. It warns about unused parameter
name=value settings in main.cf or master.cf (likely mistakes),
understands "dynamic" parameter names such as names that
depend on the name of a master.cf entry (finally, "postconf
-n" shows all parameter settings), and it can display main.cf
and master.cf in a more user-friendly format (postconf -nf,
postconf -Mf).
* Read/write deadline support in the SMTP client and server to
defend against application-level DOS attacks that very slowly
write or read data one byte at a time.
You can find the updated Postfix source code at the mirrors listed
at http://www.postfix.org/.
Wietse
