[Mailman-Users] How to enforce Author line?

[Robert Khachikyan]

Dear Guru's,

On some of the lists, I want to configure such that the very first line 
of the body contains the "Author: <name here>" line.

(This is for legacy purposes).  And if the Author line is not given, 
then messages are bounced to moderator and/or the sender.

I tried putting ^Author: and other reg exps in the "topics" section, but 
none worked.

Any ideas?

Thanks,
--Robert