Event ID - 1217

Event Id1217
SourceMSExchangeIS
Description"Information store with unlimited capacity started"
Event InformationThere is no distinction in the user interface between Exchange Server Standard and Exchange Server Enterprise editions. 
CAUSE :
This is by design. 
WORKAROUND :
To distinguish between Exchange Server Standard and Exchange Server Enterprise, check the Windows NT Event Viewer application event log upon startup for the presence of above event. For more information clock on the link given below.
Reference Links Determining if Exchange Server Enterprise or Standard Edition Is Installed

How to determine whether the information store is limited or unlimited in Exchange 2000 Server and in Exchange Server 2003

Determining if Exchange Server Enterprise or Standard Edition is installed

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