Originally Posted by ed_blackberry
I was wondering in your scenario of having exchange 2003 with BES 4.1, then adding exchange 2010 as coexistence, did your blackberry devices still recieve email? I have a similar situation and was wondering if this works before I change my DNS to route email through the new exchange 2010 server. All my users will still be on the exchange 2003 server.
Adding in a 2010 server will not affect them, unless you move a user to 2010 and the user is on BES 4.x. Only BES 5.1 supports exchange 2010.
You can also get BES Express 5