Hi All,
I have customer has Exchange 2010 deployed in one active directory site. He is looking to migrate to Exchange 2013 but with business need to deploy the new Exchange 2013 in different active directory site. So we will have 2 active directory sites one has Exchange 2010 and the other one has Exchange 2013. The WAN connection between those two active directory sites is slow little bit. So we suggested for the coexistence between Exchange 2010 and Exchange 2013 is to use separate name space for Exchange 2013. I want to ask about the coexistence plan for all the web services like OWA, Anywhere Auto-discover, Active Sync and this will work with Exchange 2010.
Ahmad Hashash, Senior Microsoft Systems Engineer, Voice Specialist