I have a service web running in the url service.old_domain.com (hosted in an internal DNS service)
Now I want to do a redirection from the url service.new_domain.com (hosted in an external DNS service)
Is it enough with adding a CNAME in the external DNS service like:
service.new_domain.com -> service.old_domain.com
Or shall I add a type A like:
service.new_domain.com -> IP address of "service.old_domain.com"