| Event Id | 21149 |
| Source | DNS Intrusion Detection Filter |
| Description | Microsoft ISA Server SMTP Message Screener failed to start. Reason: The SMTP Message Screener call to WaitForSingleObject failed (error code %1). |
| Event Information |
According to Microsoft : CAUSE : The ISA Server SMTP Message Screener call to WaitForSingleObject failed. SOLUTION : 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 | Event ID: 15005 Of Source ID:DNS Intrusion Detection Filter |
Catch threats immediately
We work side-by-side with you to rapidly detect cyberthreats
and thwart attacks before they cause damage.