At times we see this traffic to confirm that the work of the MTA is running and so you can see in detail what the source of the problem.
For this reason, we will use the command line Brigthmail (Linux): tail
First of all, we must enable DEBUG mode for the MTA logs from Control Center> Administration> Settings> Logs.
Select the Debug mode. And then you click on SAVE. We will notify you restart Brightmail Gateway. Click on Restart Now.
NOTE: By default Brightmail log stores up to 50mb. Another consideration to keep in mind is that to implement these changes, Brightmail is restarted.
Once set up this point, we enter the console of Brightmail, via SSH or directly connecting a keyboard and monitor to the appliance.
We enter the admin user credentials. Then we enter the following command:
> tail-f maillog
In this way we begin to see traffic.