This is actually breakage along the way, probably due to a mailer that doesn't understand the concept of a line longer than 80 characters (my guess is that you're getting a CR/LF combination in the middle of the RFC822 address, which is not being inserted by LISTSERV). You can always shorten up the MYORG variable in the site configuration file but you can't remove the "L-Soft list server at " and "(1.8c)" parts of the string. Nathan