Pablo, The validity of "GC.listserv.cuny.edu" depends on the relationships between the different CUNY computers, and the structure of your e-mail address seems to signal that that validity is now questionable. You have a "GC" computer that is not now served by your "listserv" server; has the configuration been changed to undo that relationship, or did it never exist? Chuck Brandstater [log in to unmask]