Hello all!
I am migrating from Ex 2007 to Ex 2013, which I have done many times. What makes this one unique is the Exchange 2007 server is using the same hostname for internal AD and public use. mail.domain.com . I need to do coexistence with 2013 to move mailboxes
and not interrupt mobile access but I'm not sure how that will look?
Do I need to pick a new public hostname for 2013?