On Tue, 17 Dec 2002 08:24:58 EST, Pete Weiss <[log in to unmask]>  said:
> Are you aware of any false positives of LISTSERV standard duplicate checking?
>
> From: "L-Soft list server at LISTS.PSU.EDU (1.8d)"
>                <[log in to unmask]>
> Subject:      Rejected posting to [log in to unmask]
> To: <[log in to unmask]>
>
> Your message  is being returned to  you unprocessed because it  appears
> to have already  been  distributed to  the  psulist  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

I've never seen a false positive.  I've seen lots of confusing correct positives
caused by loops in netnews->list gateways, and broken forwarding (every once
in a while, some bozo will accidentally forward their mail to the list).

If connectivity is good and system load light, the duplicate can show up
within a few seconds, making it *look* like your original got bounced in error.
Careful inspection of the MTA logs will probably show what happened.  You want
to look for incoming mail with a 'from [log in to unmask] that has an unlikely
SMTP relay address (i.e. not the normal PSU mail hub).
--
                                Valdis Kletnieks
                                Computer Systems Senior Engineer
                                Virginia Tech