Hi Curtis, > Whereas people outside our LAN can't send mail to anywhere (except our > domain), The usual behaviour if some basic settings are done. It is not 'usual' for nothing. > I want to make it an open relay and then progressively tighten > it down. You *DON'T* want to do that, you really don't. Perhaps you would like to post details as to why you'd want to actually do that (remember: you *DON'T* want to do that)? TIA... Nico