Today, I will show you the easiest way to install SSL in your CWP hostname, just ensure you have the CWPpro license already, if not yet, please see my How to subscribe for CWPpro in a free version of CentOS Web Panel
With that said, let us proceed. First, go to your CWP, then look for CWP Info and look for Hostname. Make sure to click on change for to us to proceed on our next step.
From here, click on Change Hostname without making any changes at all.
You should have this output below:
Once completed, just ensure rebuild the mail server with the new Hostname and restart CWP.
From here, you know how to install SSL in your CWP hostname.