We currently have listserv running on a AIX host, call it machine1.uic.edu. We have an DNS "MX" record for "listserv.uic.edu" pointing to this machine, but no "A" record. The "A" record is for machine1.uic.edu. Right now email to [log in to unmask] goes fine and the reply address is [log in to unmask] as you'd want. However, (or so I'm told) if we add a "C" record for listserv.uic.edu, the replies now say [log in to unmask] Apparently, listserv follows the DNS chain to the real machine name. Does this make sense? We want to add the "C" name so the web server URL can use http://listserv.uic.edu. How can we make listserv always use listserv.uic.edu in it's replies? John Andrews [log in to unmask]