After you turn on the SMTP server (shown above), it may still appear to be disabled.
This happens when using Mac OS X Server 10.3 to 10.3.2.
Follow these steps to resolve the issue:
- Stop the Mail server by clicking the Stop Service button in the Mail Service module of Server Admin.
- Wait 10 seconds.
- Restart the Mail server by clicking the Start Service button in the Mail Service module of Server Admin.