So, you’ve already got example.com domain (primary) and you have acquired anotherexample.net (secondary) and wish to redirect the latter to example.com. Oh! And example.com is of course on a secure https with automatic redirect from unencrypted http:// connection.

Here’s the steps to perform assuming you already have control of both domains.

  1. Choose “Aliases” from CPANEL Domains.
  2. Create new alias using the secondary domain – in this case anotherexample.net.
  3. Add redirect by going back to “Aliases” and choose “Manage redirection” for the domain anotherexample.net, which is now in the list. Type in https://example.com/ and press save.
  4. Go to CPANEL –> Domains –> Redirects and make sure you have the correct redirect.
  5. Finally fix the certificates. The certificate does not contain the anotherexample.net and you have regenerate a new certificate including the new domain. Do this by going to CPANEL –> Security and choose “SSL/TLS Status”.
  6. Here you’ll see your anotherexample.net domain and that it is not included. Correct this by pressing the “Run AutoSSL” button. It may take some time – minutes – before it’s done. You’ll see an “AutoSSL is in progress …” where you pressed the button.
How to add additional domain to existing domain with CPANEL