Bon Matin Pete, I don't know much but I've seen "#" in "european" addresses and some ".com" like they were put there by the routers or something ... not it sub addresses as is that I recall but since I think LISTSERV parses the Sender or X-Sender field I think it is a "possible" valid one ... Why do "#" make suspicious ? Is it normally reserved for a specifc usage? -- Eric Paul-Hus