So as part of our migration from old AD domain to new, I have an Exchange 2003 server providing email for us, lets say domain.co.uk. I need to migrate users across to our new AD domain, which has Exchange 2007, but still be able to access domain.co.uk for those users that migrate across to the new AD domain.
Set E03 server to be non-auth and E07 server to be auth. No emails to either address are received (NDR’s).
Set E03 server to be auth. Works as expected, [email protected] receives, [email protected] does not.
I guess what I am trying to ask is how I set it up so that email sent to the domain is received by mailboxes on both servers. If I send to [email protected] i need it to receive and if I send to [email protected] I need that to receive as well, despite being on a different Exchange server.