I am trying to configure listserv to hide the server name that it is running on. I am running into problems with messages originating from listserv containing @@host.bna.com instead of [log in to unmask] Is anyone running listserv behind a firewall, and aliasing it to listserv@domain instead of a separate machine name? Are there any settings that my listserv owner will need to make to the go.user file or other configuration not available to a list owner? The system is running on a SPARCstation-20, using SunOS 5.5.1, using sendmail.