Single Domain but multiple domain names, is it possible

I currently have a domain, test.local, but I require a server that needs adding to the domain as test.com in order to apply a security cert etc. I have alternative UPN suffix so users can logon username@test.com but I can't add a workstation/server to test.com only the true domain name of test.local.

Is there any way to allow a machine to join the domain test.local but fool it to use test.com?