>Check all the RECEIVED: line headers for host sites, and by extension,
>subscribers (and/or mail-exploders) at those sites.  Did you do SCAN
>listname commands against the various userid, name, or host-name fragments?
> This is often fruitful.  E.g., I could be subscribed to a list as
>[log in to unmask] but it is possible that it could have bounced from
>[log in to unmask] or [log in to unmask] or ...

 If this should fail, as it sometimes does, you may be dealing with
 a mail forwarding situation which can be devilish to find.  Simply
 put a subscriber has mail forwarding on and you are getting bounces
 from the forwarded address, not the subscribed address.  Sometimes
 these can also be figured out using Pete's suggestion above, but
 not in all cases.


  --Jim Cocks  Univ. of Louisville  <[log in to unmask]>