Exchange Server 2003

Stop error code 0x000000D1 when Windows Server 2003 is under a heavy network load
Resolves a problem in which a Windows Server 2003-based computer may intermittently stop responding (hang) with a Stop error 0x000000D1 (error 0xD1) message during periods of heavy network use.

The Information Store service does not start as expected in Exchange Server 2003 SP2
Describes an issue in which the Microsoft Exchange Information Store service does not start as expected.

How to obtain the latest service packs for Exchange Server 2003
Describes how to obtain the latest updates and service packs for Exchange Server 2003. Also, provides a link to the list of the fixes that the service pack contains.

User can't change permissions on users own calendar
User gets an error message when trying to change anything on the permissions tab of the users calendar folder from outlook 2007. The error message says that the permissions can't be saved.

Event 1005 or 1013 is logged when you try to start an HTTP resource in an Exchange Server 2003 cluster
Describes an issue that can occur when you try to start an HTTP resource on a Microsoft Exchange Server 2003 cluster.

How to troubleshoot mail relay issues in Exchange Server 2003 and in Exchange 2000 Server
Describes issues that may occur if your Exchange computer is configured as an open mail relay or if your Exchange computer is not correctly configured as an open mail relay.