We're trying to debug mass bounces from ISPs such as Yahoo! and Comcast for one of mailing lists powered by mailman. Unfortunately, I've never found a setting that allows mailman to handle the bounces, but also CC postmaster (or some other email address) with the actual bounce messages so we can see what the specific bounce error they give us.
/etc/aliases contains the following for each newsletter:
newslettername-bounces: "|/usr/lib/mailman/mail/mailman bounces newslettername"
So I was just going to replace that with:
But then I realized that the
/etc/aliases quotes the entry for the bounce address, uses a pipe and passes arguments to the
mailman command... so, can I modify that line somehow to send it to
mailman as well as pass the original message off to postmaster?