Marco Stoecker:
> > All the evidence that you need is logged by Postfix and mailman:
> > track down a duplicate delivery back to the source and look for
> > delivery errors.
>
> Will do a double-check of all the logfiles again. Maybe I have overseen
> something. As I'm not the 'expert' in those things, I'd like to come
> back with questions ;)
> Any suggestions what are the most important postfix logfiles I should
> have a look into?
Turn off verbose logging (no "-v" daemon options in master.cf).
You need to find the records where the same message is delivered
more than once to the same recipient, then look for all the records
with the same Postfix QUEUE ID. That will show if the duplication
happened BEFORE Postfix or INSIDE Postfix.S It may not matter for
the recipient, but it matters for the solution.
Wietse
