Steve - I think I am on top of this thing at long last. It turns out the idea of masquerading was the key, although the syntax you suggested is apparently not what my version of sendmail wanted. In the sendmail section on masquerading there is a "DM" command to which I appended my desired domain. I used the same syntax as Frank Carmichael suggested for the "DS" command, to which I appended my smtp address. Finally I made an entry of the form "CL" followed by user name for each user on my system needing local delivery, and those three changes were all it took to solve the problem. I can now send mail locally among my local users without triggering my demand dialing, and my outgoing mail carries the correct return address. Fantastic! I have not yet looked at email from Lynx, but I bet anything that it is now fixed too. Many thanks for your, Frankie's, Janina's, and everyone else's help. Janina - are you listening? It works!!! Chuck My web site is http://www.mhonline.net/~chuckh The Moon is Waxing Gibbous (79% of Full)