| Event Id | 10003 |
| Source | MSExchangeMSMI |
| Description | Fatal Assert: File sfsems.cpp line 837. Mailer thread failed. |
| Event Information | According to Microsoft: CAUSE: The MSMI is attempting to log an event for an NDR of a message with invalid sender and recipients. WORKAROUND: 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 Links | XFOR: MSMI Crashes Logging Event for NDR and Generates Event ID 2380 |
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