[Mailman-Users] duplicates

[Laura Creighton]

In a message of Wed, 28 Oct 2015 10:22:50 +0100, Marco Stoecker writes:
>But now I have no glue how to configure on the ISP side or
>postfix(relayhost) or mailman to avoid such duplicates.
>Any assistance possible here in this mailing list?
>
>BR
>Marco

There is a fetchmail-users mailing list here:
https://lists.sourceforge.net/lists/listinfo/fetchmail-users
if you need to ask about how to configure fetchmail.  I am not sure
that is your problem, though.

Laura