Site A: 2 MBX only Exchange 2010 Servers (SP1 Rollup 6) 2 CAS/HT Exchange 2010 servers (SP2 Rollup 1) running NLB. 3 DCs of which 2 are GCs We are adding a new site shortly for a new office. This will only have a single DC in it. Is there anything I have to do for the Outlook clients in that office to work, or will they connect to the CAS array in Site A? Thanks! :-)

Everything is dependant on where Exchange and the mailbox is, not where the users are. Therefore if you are not putting Exchange in that location, it doesn't matter. They will just use the CAS Array of the existing location. Simon. Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

Hi Clients message is stored on mbs server. So you can only enable mailbox on your exist mbs server and your client will connect to cas in site A. TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Terence Yu TechNet Community Support