Mobility in Exchange 2003
Exchange Server Mobile Features
http://www.microsoft.com/exchange/techinfo/mobile/
Configuring Mobile Devices to connect to Exchange Server 2003
www.msexchange.org/tutorials/Configuring-Mobile-Devices-Exchange2003.html
Outlook Mobile Access (OMA) in Exchange Server 2003
www.msexchange.org/tutorials/OMA_Exchange_Server_2003.html
Exchange Server 2003 Client Access Guide
http://www.microsoft.com/technet/prodtechnol/Exchange/guides/E2k3ClientAccGuide/7ff636d5-a97d-4ac9-a090-10eb428ccf83.mspx
Mobility in the Microsoft Exchange Team Blog
Known Issues:
Exchange ActiveSync and Outlook Mobile Access errors occur when SSL or forms-based authentication is required for Exchange Server 2003
http://support.microsoft.com/kb/817379/en-us
You receive an HTTP_500 error message when you synchronize your mobile device with Microsoft Exchange Server 2003
http://support.microsoft.com/?kbid=886346