SBS20034 devices - all sync fine
Install Exchange 2003 Service Pack 2
Solution (workaround):On the 8125 device(s), click start -> settings -> connections -> connections. Cingular appears to have renamed “My ISP” to “MEdia Net”. Click “Edit My Proxy Server” under “MEdia Net” and UNCHECK “This network uses a proxy server to connect to the internet”. By default it was set to “wireless.cingular.com”. Soft reset the device.
Note we believe this issue to be related to 0x8503001A (IIS compression settings) but has been unconfirmed.