I don't understand your question. What is "an auto-responder account?" What, if anything, does it have to do with LISTSERV processing? LISTSERV itself has implemented various error monitors and probes using some heuristics. Does your "A-R A" do the same? By that I mean that e-mail delivery has seldom been 100 % reliable -- what bounces today might work just dandy tomorrow. Pete At 14:53 05/28/2002 Tuesday, Maria Farrington wrote: >I have an auto-responder account set up to send a response back to every >one sending email to the account. About 5%-10% of the auto-responses >get rejected for invalid email address, or domain name not found. > >this is the statement we have in the list header >Reply-to= List,Ignore > >Is there a way to make the list look first at a specified "Reply to" >address, and if nothing there than default to the sending email account? End Reply