Extensible Storage Engine 98 Error Codes
http://support.microsoft.com/?id=266361
Exchange 2003 Error Code Look-Up Tool
http://microsoft.com/downloads/
details.aspx?FamilyId=BE596899-7BB8-4208-B7FC-09E02A13696C&displaylang=en
Native Content Storage in Microsoft Exchange 2000/2003
http://support.microsoft.com/?id=232323
Best Practices for Deploying Full-Text Indexing
http://www.microsoft.com/exchange/techinfo/deployment/2000/BestIndexing.asp