Troubleshooting the message queue

When a message queue becomes too large, Symantec Messaging Gateway can become unresponsive or crash. To attempt to deter this issue, by default, Symantec Messaging Gateway defers new messages when the queue is full. As a best practice, you should leave this setting enabled and keep queue limits below the recommended default thresholds.
If you experience issues with the message queue, try the following:
Repeat these measures until the issue is resolved.