[Dovecot] Dovecot load balancing

Anders Melchiorsen
Thu, 31 Jul 2008 14:23:43 -0000

Thomas Hummel wrote:

> The same machine is running postfix-2.4.6 with amavisd-new-2.5.4 (no
> spamassassin) and clamav-0.93.1. I'm using procmail-3.22 as the LDA.
>
> I installed dovecot-1.1.2 on non-standard ports for test and plan to
> switch to
> it as I read on this list it performs better, load wise.

Also, Dovecot v1.1 should do better with NFS.

> Every friday a message (no attachement, decent size) is sent to all users
> : in
> such circumstances (but only sometimes, not every time : let's say half
> the
> time such a message is sent), the load goes so high that I have to stop
> dovecot
> to let procmail deliver the message or even reboot the machine.

How about doing some rate limiting in Postfix, or even moving that to a
different server?


Anders.