[Mailman-Users] Preventing postings with no Subject:?

[Thomas Gramstad]

How can I prevent postings with no Subject: from being
distributed via a Mailman mailing list?

Ideally there would be a way to automatically reject
the posting and return it to the sender and ask them
to post it again with a Subject:-line.

Or at least a way to have Subject:-less postings placed
in the moderation queue.

Thomas Gramstad
thomas at ifi.uio.no