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>>>>> "MA" == Monika Adamczyk <email@example.com> writes:
MA> I can't also to predict which lists are cross posted - this changes
MA> with each message.
Then, in short, you are screwed.
If a message is crossposted to five lists and Joe is subcribed to all five
of those lists he will receive five copies of that message, one per list.
There is nothing you can do on the server side of things because each list
is ignorant of the existance of other lists. Majordomo has nothing to do
with actual delivery of messages; it leaves it up to the MTA, a tool
designed for delivering messages. And, as far as the MTA is concerned,
each instance of a given message is unique.
If this is a problem then Joe should use a mail filter like procmail that
can eliminate duplicate messages based on Message-ID headers. Or else you
should find a mailing list manager that can do what you want... but as far
as I know there are none.
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Rich Pieri <firstname.lastname@example.org> | When not in use, Happy Fun Ball
Prescient Technologies, Inc. | should be returned to its special
A Stone & Webster Company | container and kept under
I speak for myself, not PTI or SWEC | refrigeration.