>One or probably several users have had a problem with my list server somehow
>generating duplicate postings.
>
>Are there any ideas as to where I should look for a solution to the problem?
>Below, the problem is described by a user:
>
>"
>I'm having a problem with the list: whenever I send a reply to the list I
>get a message stating that
>
>"Your message  is being returned to  you unprocessed because it  appears
>to have already been distributed to the  ATMOSPHERICDISPERSION list. That
>is, a message with identical text (but possibly with  different mail
>headers) has been posted to the  list recently, either by you or by someone
>else."
>
>But I only sent the messages ONCE, and it was posted.
>"

Usually this indicates that a broken mailer out there somewhere is
forwarding a copy of the mailings back to the mailing list instead of
(or in addition to) delivering them locally.  If you look at the
Received: headers of the rejected copy of the message it should be
possible to determine at what point the message starts looping back
to the mailing list, and there may be other clues as to what the
problem subscription is.

Thanks,
--
Jacob Haller, Technical Support, L-Soft international, Inc
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