Microsoft Internet Security and Acceleration (ISA) Server 2004 Enterprise Edition RPC Filter Blocks Outlook Traffic from Computers Running Windows Server 2003 Service Pack 1 (SP1) 3440.263

Outlook 2003 running on Windows Server 2003 Service Pack 1 cannot connect to an Exchange 2003 server through ISA Server 2004 Enterprise Edition. Earlier versions of Outlook may also be affected. Windows Server 2003 SP1 makes significant changes to the...