I have an exchange instance installed and working, but I do not want this machine to delivery email itself. To explain:-
Exchange server hosts domain foo.com. User A logs in to send a message to userB@foo.com Exchange looks up this user, and delivers it locally. This message never leaves this box. I need this message to pass through another system, where all mail for domain foo.com is handled and distributed/logged etc correctly.
How can I configure exchange to believe that it is NOT the MX for the domain on which it sits?