We just ran ADPREP for adding 2 new WIndows 2003 R2 DCs on our domain. We moved FSMO roles and demoted the previous DCs in our domain. Exchange 2003 SP2 recognized the new DCs for Directory Access. All Exchange services were functional except OMA. RPC over HTTP Outlook client access, Webdav, and OWA are all still functional - although devices are failing to sync now. Any thoughts on what might have caused this to discontinue functioning?