[Mailman-Users] Mailman needs 20 seconds to complete per email

[Karsten Becker]

Hi,

thanks for your answers. Maybe I have misunderstood the architecture.

What I can see in the mail.log is, that the incoming email towards a
mailing list gets transported nearby "at once" from Postfix to Mailman.
Then I see nothing in the Mailman logs for 20 seconds. Then Mailman
prints out these message shown below and nearby "at once" I see the
email in mail.log going out via Postfix.

So, how/why could a Postfix configuration setting be the cause...?
Postfix, as far as I can see it in mail.log, is handling the email fast
as hell.

This question is definitely not for ranting - I'm just trying to
understand correctly how everything works together to find the
"brake"...  ;-)

It the meantime I have opened a dedicated port for Mailman at my Postfix
for re-injection, without a second unneeded round through Amavis & Co. -
but this didn't help either.

Regards
Karsten

On 11/27/2012 11:02 PM, Ben Cooksley wrote:
> On Wed, Nov 28, 2012 at 10:56 AM, Ralf Hildebrandt
> <Ralf.Hildebrandt at charite.de> wrote:
>> * Mark Sapiro <mark at msapiro.net>:
>>
>>>>> Nov 27 08:00:22 2012 (10393) <mailman.0.1353999601.22399.carbonmarkets at lists.mycompany.eu> smtp to carbonmarkets for 1 recips, completed in 21.021 seconds
>>>>> Nov 27 08:00:43 2012 (10393) <mailman.1.1353999601.22399.agriculture at lists.mycompany.eu> smtp to agriculture for 1 recips, completed in 21.013 seconds
>>> [...]
>>>
>>>
>>> It is extreme and highly unusual for a single Mailman-Postfix SMTP
>>> transaction to take 20 seconds, but it is almost certainly due to
>>> something in your Postfix configuration.
>>
>> It's probably some DNS resolution issue (I'd say). Or a really slow
>> smtpd_proxy_filter.
> 
> It could also be a sleep command, in one of the various
> smtpd_client_restrictions rules.
> Usually one puts permit_mynetworks (which contains
> localhost/127.0.0.1) before those though.
> 
>>
>> --
>> Ralf Hildebrandt                   Charite Universitätsmedizin Berlin
>> ralf.hildebrandt at charite.de        Campus Benjamin Franklin
>> http://www.charite.de              Hindenburgdamm 30, 12203 Berlin
>> Geschäftsbereich IT, Abt. Netzwerk fon: +49-30-450.570.155
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