[Mailman-Users] Serious Performance issue

Gadi Evron ge at linuxbox.org
Tue Oct 17 17:38:48 CEST 2006

On Tue, 17 Oct 2006, Peter Kofod wrote:
> Hi Everyone:
> I am new to this list having just implemented mailman for an
> announce-list we host.  In short, the performance is horrible.  The list
> has approx 40,000 subscribers and the avg message going out is about 40K
> (some embedded imagery).  I know we can do better with lazy html etc.,
> but the system has become unresponsive.

Generally, mailman does not really cope with *very* large lists too
well. It is still my system of choice.

> Here are the specifics:
> Fedora Core 5
> Mailman, Postfix (FC 5 releases), Apache, Sendmail

Are you running spamassasin and similar? Looking at the header, do you see
a significant time lapse between certain hops?
> It has gotten to the point where we can't even manage the system via the
> web interface (keep getting a 500 Internal Server error).  I am
> obviously no mailman or postfix guru, so any pointers on where I should
> look in the logs and make changes would be helpful.
> Thanks,
> Pete
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