Application Event Log

Each service logs an event to the application event when startup has completed.
Service Event source Event number
System attendant MSExchangeSA 1000
Directory MSExchangeDS 1000
MTA MSExchangeMTA 9298
Information store MSExchangeIS Public 1001
MSExchangeIS Private 1001
Internet Mail Service MSExchangeIMC 1000
Key Management server MSExchangeKMS 1001