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