1. Enable Premium AntiSpam
2. Confirm that Premium AntiSpam is set to reject spam messages
3. Stop Symantec Mail Security services.
4. Fix possible license problems.
5. Fix possible ruleset corruption problems.
6. Restart Symantec Mail Security services.
7. Reinstall your licenses.
8. Reset IIS to remove any cached values.

1. In the Symantec Mail Security for Microsoft Exchange interface, in the left pane, click Policies.
2. In the middle pane, click Premium AntiSpam Settings.
3. Check Enable Premium AntiSpam.

To confirm that Premium AntiSpam is set to reject spam messages

1. In the Symantec Mail Security for Microsoft Exchange interface, in the left pane, click Policies.
2. In the middle pane, click Premium AntiSpam Settings.
3. Under If message is Spam, check Reject the message.

The document, Overview of Premium AntiSpam in Symantec Mail Security for Microsoft Exchange includes information about the Premium AntiSpam actions.

Source: Symantec.com