Solution No: 12049
Title: How to check the Exchange Service Pack level level
For Exchange 2000:
Start the Microsoft Exchange System Manager program (Start menu | Programs | Microsoft Exchange | System Manager). In the left pane, Expand Servers. Right-click on the Exchange server name to display the menu and then select Properties.
The version, build number, and any service packs that are installed are displayed.
For Exchange 5.5:
Start the Exchange Administrator program. From the Help menu, select About Microsoft Exchange Administrator…
Additional notes: MS Knowledge Base article: http://support.microsoft.com/default.aspx?scid=kb;en-us;Q166349
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