Event ID - 10003

Event Id10003
DescriptionFatal Assert: File sfsems.cpp line 837. Mailer thread failed.
Event InformationAccording to Microsoft:
The MSMI is attempting to log an event for an NDR of a message with invalid sender and recipients.
Resetting the INQUEUE3 Key and Mbg file on the shadow post office will allow the MSMI to restart, but will result in the loss of any messages in the queue.
Reference LinksXFOR: MSMI Crashes Logging Event for NDR and Generates Event ID 2380

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