We have the following problems with the combination of LISTSERV and Crosswell MAILER: . We receive via LISTSERV mail with a userid longer than 8 characters in the To: field to be passed via the MAILER to a VAX/JNET node. The MAILER rejects the mail because of the length of the userid. What can we do to allow transmission (either permit long userids or truncate to max 8 characters)? . If the ultimate receiving VAX/JNET node detects a problem like "NO SUCH USER" the undelivered mail is returned NOT to the originator but to our MAILER causing loops. How can prevent such loops? I have changed the mailsoft definition from JA JNET to JNET, but I don't know, if this solved the problem. Any information helping us and the VAX/JNET node solving these problems is appreciated. Thanks in advance and regards, Joachim Lammarsch