Turgut,
 
For clarification. Did you infer that LISTEARN will be modified to check
for various subject line strings to determine if the mail is from a
mailer or somesuch. In particular, does it handle PMDF mail which defaults
to sending a mail message to the sender (LISTSERV) for each message telling
him that he could not deliver the mail within 3 days so will try again for
the next 9 (or whatever). If LISTEARN decides not to put such a message to
the list (good idea) can it be set so that it will 'black hole' the mail
rather than bouncing it to the postmaster. How do other sites handle this?
 
Thanks,
 
Dermot O'Beirne
UCD, dublin