I have a problem I was wondering some of you guys could help me with!
I'm going to install a new installation of Exchange 2010, and I already have an sendmail based pop3 solution.
The case is that I want to gradually move the users from sendmail to Exchange, like only a test group. And then after a while the rest of the bunch.
The problem is like I see it, they have the same e-mail address domain and the e-mails would not be sent to the right server from outside, because the mx record still points at the sendmail server.
And e-mails from exchange server to an recipient thats on the sendmail server would probably not be routed correctly!
Do anyone have an idea what I should to to get around this for my test period?