[dannychaplin]

Hello,

I have a customer who uses BES they are on Exchange 2007 I have moved all users to Exchange 2013 other than the BES users as moved one and they no longer work.

How can I re-point the BES server to the new Exchange 2013 server?

I can then move all the remaining users (BES Users) across.

I don't want to rebuild the server and have to get the clients to setup there devices again if possible.

[knottyrope]

you have to do a bit of work as shown on this KB

KB33413-How to configure the BlackBerry Enterprise Server to leverage RPC/HTTP for Microsoft Exchange Server 2013