Event ID - 8273

Event Id8273
SourceMSExchangeFBPublish
DescriptionDeletion of duplicate free/busy messages for virtual machine <name> is starting.
Event InformationAccording to Microsoft:
This behavior occurs because the only instance of the Schedule+ Free/Busy system folders has been deleted or contains invalid data. The new Exchange 2000 or Exchange 2003 Server points to an incorrect Exchange Server computer as being the public folder server for the administrative group. If you use the ADSI Edit snap-in, the LDP utility, or any other LDAP version 3 client, and you incorrectly modify the attributes of Active Directory objects, you can cause serious problems. These problems may require you to reinstall Microsoft Windows 2000 Server, Microsoft Exchange 2000 Server, or both. Microsoft cannot guarantee that problems that occur if you incorrectly modify Active Directory object attributes can be solved. Modify these attributes at your own risk. No user action is required.
Reference LinksSchedule+ Free/Busy System Folder Is Missing

Exchange (MSExchangeFBPublish)

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