| Event Id | 21149 |
| Source | POP Intrusion Detection Filter |
| Description | Microsoft ISA Server SMTP Message Screener failed to start. Reason: The SMTP Message Screener call to WaitForSingleObject failed |
| Event Information | According To Microsoft: The ISA Server SMTP Message Screener call to WaitForSingleObject failed. Resolution: Free up memory. Close other programs that are running. Use the Task Manager to check programs and processes that are using large amounts of system resources.Restart the service hosting the Message Screener sink filter.Reinstall the Message Screener filter. |
| Reference Links | Microsoft product: Internet Security and Acceleration Server Version: 4.0.3443.594 Event Source: POP Intrusion Detection Filter Event ID: 21149 |
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