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Note: Extended life-cycle support for Exchange Server 5.5 originally concluded on December 31, 2005 but was adjusted to end January 10, 2006.

Exchange 5.5 Support Center
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Technical Articles

Active Directory Services Interface in an Exchange 5.5 Environment
Enhancing Exchange 5.5 Security
Exchange 5.5 Disaster Recovery
How to Change the Exchange 5.5 Service Account
Making a Permanent Delete Temporary: Restoring a Deleted Exchange Object
Moving an Exchange Server to a Different Site
Preventing and Correcting Large Distribution List Message Storms
Setting Up a Test Environment for Exchange 5.5
Strategies for Exchange Service Packs and Version Upgrades
Supporting the Exchange Offline Address Book
Understanding -1018 Errors
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