If you wish to verify the Service SSL On The cPanel Server  Using  the Command Line Interface , Use The Following Commands

For cPanel :: 

openssl s_client -showcerts -verify 32 -connect server.hostname.net:2083

openssl s_client -showcerts -verify 32 -connect 192.168.1.1:2083

For WHM :: 

openssl s_client -showcerts -verify 32 -connect server.hostname.net:2087

openssl s_client -showcerts -verify 32 -connect 192.168.1.1:2087

 

Where 192.168.1.1 Is The Server IP While server.hostname.net Is the server HostName