Event ID - 276

Event ID276
SourceSymantec
DescriptionAn Error has occurred while performing a system heartbeat. The error: An unexpected error has occurred. This error occurred while extracting heartbeat attachment contents. Internal error 0x800A0C93
Event InformationAccording to Symantec

Cause:

Enabling heartbeat and not specifying a mailbox causes this error to display.

Resolution:

The problem with implementing custom email recipient policies is solved in Symantec AntiVirus/Filtering 3.0 for Microsoft Exchange build 93 or newer. Use the appropriate section to obtain an update.
Reference LinksEvent ID 276 of Source Symantec

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