Hi friends, I would like to know what would happen if a listserv list receives a non delivery message from UCLA-Mail (UCLA-Mail uses returntosender) IF the subject would be "MAIL Delivery report"instead of "Undelivered mail". What heuristics are used to detect loops here. Thanx in advance Peter ---------------------------- Text of forwarded message ----------------------- Date: Wed, 16 Mar 88 19:17 CET To: GRZ027 From: Postman Subject: Undelivered mail Your mail was not delivered to some or all of its intended recipients for the following reason(s): 5001 mailbox invalid -> HUHUHU ---------------------------------------------------------------------- Message-ID: <"88-03-16-19:17:53.85*GRZ027"> Date: Wed, 16 Mar 88 19:17 CET To: HUHUHU Subject: Test message From: Peter Sylvester <GRZ027> This is a test message to demonstrate "mail from postman". An actual LISTSERV mail would have Sender: listname etc