Specifications

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Open the Microsoft knowledgebase article to determine the version andBuild numbers and release dates for Exchange Server
service pack level the Exchange Server is running; the minimum requirement for Exchange Server 2003 with Service Pack 1 is
Version 6.5, Build 7226.
Go to .Step 2
Exchange Server 2007 Version and Build
Use the following steps to determine the version and service pack number on Exchange Server 2007.
Click here to expand...
Open the Exchange System Manager on the Exchange Server, and click Server Configuration:
Open the Microsoft knowledgebase article to determine the version andBuild numbers and release dates for Exchange Server
service pack level the Exchange Server is running.
Go to .step 2
Exchange Server 2010 Version and Build