On Wed, 23 Nov 1994 01:25:54 EST Roger Fajman <[log in to unmask]> said: >We are writing an automated mail forwarding program for Microsoft mail. >One option will be to send a message back to the sender notifying them >of the changed address. We would like to be sure that such messages will >be captured by the LISTSERV filters, even for Safe=no lists. I know that >LISTSERV looks for subject lines that begin with "undeliver". What other >words does it look for? UNDELIVER*, RETURNED NETWORK MAIL, UNABLE TO DELIVER*, DELIVERY REPORT*. Above all, you want to make sure that your forwarding program does not send anything when the return path is owner-xxxx, or many list owners will get upset. Even if the message is filtered, they have to read and discard it :-) Eric