http://domain/cPanel, http://domain/whm and http://domain/webmail >> Not working.

http://IP/cpanel, http://IP/whm and http://IP/webmail >> Working

Solution :

Go to WHM >> Tweak settings :

Disable the option "Add proxy VirtualHost to httpd.conf to automatically redirect unconfigured cpanel, webmail, webdisk and whm subdomains to the correct port (requires mod_rewrite and mod_proxy)"

The issue is resolved