This isn't a REGISTER problem, but an end-user problem. He exceeded the LISTSERV threshold of bogus/incorrect commands to LISTSERV. As nice as REGISTER is, it is not necessary to do so in order to use LISTSERV facilities. As your post indicated, the user's privileges to issue commands were suspended UNTIL anybody else issues the LISTSERV command (to the IRISH site): SERVE userid@node /Pete Weiss -- Penn State