with all of the unreachable ( bogus or otherwise ) addresses that we see these days, could/should messages sent in acknowledgement: Your command / message has been forwarded to the owner of <listname> be sent out with a FROM/ERRORS-to/Return-path pointing to owner(listname ) ? Seems that the owner, not the postmaster/listserv-maint, is the person who needs to know message was undeliverable ..... ?? - mike