[Mailman-Users] mailman running very slow

[Brad Knowles]

On Oct 24, 2012, at 9:52 AM, Lindsay Haisley <fmouse-mailman at fmp.com> wrote:

>> That seem to be a very long time for processing a list.
>> 
> Yes, that's a long time.  If nothing has changed in your Mailman
> installation, I'd guess you're looking at an issue with the SMTP server,
> or possibly a network issue.  A look at your mail server logs and the
> timestamp data therein should give you a finer-grained look at the
> timing of SMTP events associated with Mailman's outgoing posts.

One thing I've found in the past is that frequently the mailing list administration and the SMTP MTA administration is done by different teams, and when one side asks the other if anything has changed the answer will frequently be "No, nothing at all".  However, in many cases, there were changes made that were felt to be so minor that they were trivial and wouldn't count as "real changes".  Nevertheless, many so-called "trivial" changes can frequently have impacts far above and beyond what was anticipated.

I'd encourage the OP to also check out their DNS caching resolver servers, to see if they've recently had any problems or made any changes (even apparently trivial ones).

> Another very useful tool for analyzing mail issues is swaks.

Now that's a tool I had not heard of before.  I'm assuming you mean the tool at <http://www.jetmore.org/john/code/swaks/>?

--
Brad Knowles <brad at shub-internet.org>
LinkedIn Profile: <http://tinyurl.com/y8kpxu>