Нет, DNS просто переводит имена хостов. Необходимо было бы настроить веб-сервер, чтобы сделать это.
Have you got a TXT record named servername._afpovertcp._tcp.example.com? As a service is made up of both an SRV record and a TXT record I think you'll find you need both for a service to be resolved successfully.
servername._afpovertcp._tcp.example.com