In this instance the problem was taken care of by the mail system, I switched things around so the errors went to another address. Then, when the old account was reactivated, all the old stuff poured in, hadn't exceeded the 4 day delivery attempt limit (close, though). So my question still remains. What would happen if you have Errors-to:= A and Owner= B ? Errors-to:=A and Owner= A ? if the A address continues undeliverable past the delivery attempt cutoff? Go back to owner-listname as an error which is sent to the same sour address? Try to send it to another Owner address (if there is one)? Send it to the host's list maintainer? Other? Just curious. Douglas Douglas Winship Hays County, Texas [log in to unmask] Secondary AUTOCAT Listowner MEDLAB-L