The listserv issue is small for this post. But I am seeking help with a MS exchange issue. I am using MS exchange 2002. The Server hosts 2 mail domains on a single machine and a single IP. Listserv works fine with this configuration. However when I go to shut down the relaying, so that the server doesn't stay open and become a free spam machine, the listserv stops working. I am located in Los Angeles. If anyone has any information to help me lock down the server and maintain the listserv function I would appreciate the help. You can reach me outside the list at [log in to unmask] Thanks in advance for your help.