| Event Id | 21147 |
| Source | POP Intrusion Detection Filter |
| Description | Microsoft ISA Server SMTP Message Screener failed to start. Reason: The SMTP Message Screener could not read the registry configuration |
| Event Information | According To Microsoft: The ISA Server SMTP Message Screener could not read the registry configuration. Resolution: Verify that the Message Screener filter has access to the registry by looking at the security event log and verify that the registry is configured correctly. |
| Reference Links | Microsoft product: Internet Security and Acceleration Server Version: 4.0.3443.594 Event Source: POP Intrusion Detection Filter Event ID: 21147 |
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