Domain addressing problem solved. By: 1. Making sure RSCSDOMAIN parm for SMTP config file is set to Bitnet 2. Setting Sender= and Reply-To= fields to domain name of my choice (Vm1.Ferris.Edu) for all lists 3. Installing SMTP RULES file available from several sources in place of defaults. 4. Running a little prog that changes smtp@interbit in DOMAIN NAMES file to my local smtp gateway. It now appears that all my listserv stuff now has a valid domain style address and I have lost the .Bitnet which seems to be such a point of contention. I don't see any problems so far and subscribers' reply "buttons" now serve up a working address no matter where they are. Thanks for your help. Regards, Trevor C Poole Tech Person and general dogs-body Ferris State University