Just set up a Windows 2003 Server with Exchange 2003. We are unable to send any emails from the server whilst relay is set off in the exchange manager. As soon as we enable relay it can send ok. I am using the same settings as on my old Windows 2000 server. THe emails get sent from an ASP page. DO we need any authentication as on the old code we used the Administrators username & password for the server however on the new code we do not. Could this have somehing to do with the problem?
Would appreciate any assistance anyone has to offer as this is my first installation of a server.