McKinnon Chris:
> Hi,
>
> I'm experience performance issues with a Postfix installation I
> setup on a Mac OS X server. Originally it was OS 10.7.4 and Postfix
> 2.9.4, which worked very well. I was using a relatively stock
Simple questions:
(1) Have you looked at the system logfile for Postfix warning
messages? There may be tons of them.
(2) When you use the telnet command to connect from a client (that
experiences the problem) to the Postfix server:
$ telnet servername 25
How long does it take before Postfix responds with
220 servername ESMTP
If (2) takes 5-10 seconds or more, Postfix may have a problem looking
up the client hostname. A related symptom is that Postfix will log
the connection as:
postfix/smtpd[xxx] connect from unknown[ip.addr.ess.here]
This assumes that you know where Postfix logging is stored.
Fixing problems with hostname lookup requires someone who is familiar
with MacOS. I'm sure there is at least one on this mailing list.
Wietse
