On 10/21/2015 12:51 PM, Wietse Venema wrote: > 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.
Here is an entry beginning where an email was sent 5 times Oct 22 10:40:10 hostname postfix/local[4909]: BF9AD1C94: to=... Is BF9AD1C94 the Postfix QUEUE ID? If so, than each mail that was sent 5 times have 5 different QUEUE ID's. Is that an indicator that the duplication happend earlier (maybe by mailman?) in the chain? Thx Marco > > Wietse >
