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Subject: Re: Mail delivery suddenly stops
From: Wietse Venema (wietseporcupine.org)
Date: Tue Jul 04 2000 - 09:11:06 CDT

Alberto Gonzalez Iniesta:
> I haven't reproduced the error yet, but after issuing a hourly mailq, I
> can see too many timeouts.

Please give an example.

> I thought that the problem could be too many
> smtp processes going out and I set the default_process_limit to 50
> (which is the default amount I think) but if I do a ps I get:
>
> [rootXXXX root]# ps ax| grep smtp |wc -l
> 66

This command counts SMTPD processes, too.

> There are 66 smtp processes running, and sometimes even more.
> Could be that the problem? (X % of emails deferred due to timeout, and
> 4-6 hours later going out?
> Can I limit smtp processes so they won't 'overload' my conection and
> time out themselves??

What evidence do you have that 50+ SMTP connections overload your
network link?

See http://www.postfix.org/rate.html#process for setting process limits.

        Wietse