| Details | |
| Product: | Internet Security and Acceleration Server |
| Event ID: | 21134 |
| Source: | ISA Server H.323 Filter |
| Version: | 4.0.3443.594 |
| Component: | ISA Server Services |
| Message: | Microsoft ISA Server SMTP Message Screener held a mail message in the BadMail queue because the message arrived while in lockdown mode. Further events of this type will not be reported to the Event Log until the service is restarted. |
| Explanation | |
| The initial configuration could not be read, and the filter is in lockdown mode. Mail messages arriving are put in BadMail queue until the configuration is retrieved. | |
| User Action | |
| Verify there is connectivity from the Message Screener filter computer to the ISA Server computer. | |