5 Jan 2009
Postfix 2.5.6 has been released this morning and I just installed and tested it on my test and production server and it all works as one should expect. There are no major changes in this release just some bugfixes.
The bugfixes in 2.5.6 are:
- Postfix 2.5: the SMTP server did not ask for a client certificate
with “smtpd_tls_req_ccert = yes”. Reported by Rob Foehl. - Postfix 2.5, 2.4 and 2.3: avoid reduced TCP performance when
reusing an SMTP connection with a larger than 4096-byte TCP MSS
value. In practice, this could happen only with loopback (localhost)
connections.
For instructions on how to upgrade Postfix please read Upgrading Postfix.



Comments
2:59 am
I compiled and installed postfix 2.5.6, everything seems to work fine .
I have configured postfix to handle multiple virtual domains.
Initial tests are passed, after 1~2 hours of deployment.
Postfix started to complain that user is unknown
… relay=local, delay=0.62, delays=0.6/0.02/0/0, dsn=5.1.1, status=bounced (unknown user: “xxxx”)
If I restart my machine, the problem goes away for a while, then it will eventually come back.
I decided to downgrade postfix to 2.4.11, the problem was completely removed! (using the same set of configuration files) My Postfix is happily receiving emails for all my users!!
I suspect there is either 1 bug in 2.5.6 or some how incompatible with Leopard I am using.
In fact, I do not see any improvements for 2.5.6 over 2.4.11 .
Cheers,
Jack
6:34 am
Jack, sounds like a problem with the MySQL database access? Is this the only error message or are there more in the logfile? You might also check system.log for error messages.