[Mailman-Users] Postponing delivery.

Zeljko Vrba zvrba at iskon.hr
Tue Sep 19 11:30:20 CEST 2000

On Tue, Sep 19, 2000 at 09:32:12AM +0100, Nigel Metheringham wrote:
> Your previous messages have shown you are using programmatic invocation 
> of sendmail rather than SMTP injection.  I would call this 
> configuration "courageous"... and it certainly will be heavier on 
> resource usage than SMTP injection.   Other of your problems on the 
> list certainly appear to be sendmail misconfiguration or misinvocation.
I switched to sendmail from SMTP injection because of long delays I've
described before. For the sake of the argument, please create a test list
and subscribe to it e.g. 100 users from a domain for which the DNS is
broken (can't be contacted). And see what happens. How long it takes qrunner
to run. How all other messages will be delayed by 100*(connect timeout)
minutes etc...

And I can't lower the limit on timeouts because there are really broken
domains here in Croatia for which connect() delays are > 1 min. Not to
mention that we serve some lists with people from Uzbekistan etc...
Reconfiguring the
sendmail to lower timeouts is out of the question. There is an option
to skip initial DNS query, but it had no effect.

Anyway... conclusion is that mailman is good for ideal conditions: high speed
networks with servers and DNS's always up and running... It seems that none
of you has tried running Mailman to serve people on several broken or
misconfigured networks which are down for several months etc..

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