Marco Stoecker:
> > 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?
Yes.
> If so, than each mail that was sent 5 times have 5 different QUEUE ID's.
Then Postfix received 5 different messages.
> Is that an indicator that the duplication happend earlier (maybe by
> mailman?) in the chain?
You need to search for the logfile records where these 5 messages
were received. Usually that will be smtpd records for SMTP mail,
or pickup records for mail received with /usr/sbin/sendmail.
Wietse
