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Event ID: 9373 Source: MSExchangeSA

Source
Level
Description
OALGen detected that the file '\\<server name>\ExchangeOAB\<folder name>\a58e388b-7b23-4944-b042-58a7d0c6590f-data-1.lzx' is corrupted or missing. This indicates data tampering or disk problems. Restore files in this folder from the recent backup or clean up folder content and force a full OAB generation. - Default Offline Address Book
Comments
 
This event occurs when you update the offline address book in Exchange Server 2007 because one or more OAB Version 4 offline address book files are corrupted or missing. See ME931744 to resolve this issue.

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