The Mail Queue feature lets you examine mail messages in the queue. On a ClearOS mail system, you will typically find a number of messages in the queue:
Delayed messages due to remote mail server outages
Delayed messages due to blocking policies on remote mail servers
Invalid bounce messages from remote mail servers
If you did not select this module to be included during the installation process, you must first install the module.
You can find this feature in the menu system at the following location: