Paul Dickson <dickson(_at_)permanentmail(_dot_)com>:
A piece of mail is considered duplicate if it has the same message-ID
as the message immediately preceding and more than one addressee.
How about including Sender: into this determining factor? Sender: is set
to the mailing list address.
How would this help? Under what circumstances could an MTA send two messages
with the same Message-ID vut different Sender headers?
--
<a href="http://www.tuxedo.org/~esr/";>Eric S. Raymond</a>
The world is filled with violence. Because criminals carry guns, we
decent law-abiding citizens should also have guns. Otherwise they will
win and the decent people will lose.
-- James Earl Jones