Event ID - 1151

Event Id1151
SourceMSExchangeIS Private
DescriptionA Rule synchronization error (1144) has occurred. The private folder is Top of Information Store\Inbox. The distinguished name of the owning mailbox is: /O=ORG/OU=SITE/CN=Recipients/CN=123456
Event InformationAccording to Microsoft:
The ISINTEG utility was run with the following parameters: ISINTEG -pri -fix -detailed -test namedprop. The issue occurs when messages have MAPI properties assigned that have no mapped name; this can be caused by third-party applications.
To resolve this problem, obtain the latest service pack for Exchange Server version 5.5.It is also necessary to run Isinteg.exe again with the following parameters: ISINTEG -pri -fix -detailed -test namedprop
Reference LinksXADM: MoveUser Fails After Running ISINTEG

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