If you want to forward a domain address that you have to another domain name or subdomain, the best way to do this would be to use a CNAME record. By setting up such a record, the domain address being forwarded loses all of its records (A, MX, and so on) and instead, it takes the A record of the domain address it's pointed to. In this way, if you use a web design service by some provider that gives you a subdomain, you can use an actual domain and not only will it be redirected to the Internet site you have set up, but it will also be displayed in the Internet browser address bar at all times. Other possible uses of a CNAME record are to direct all the traffic from various subdomains to their main Internet domain, or to use the webmail service of your webhosting company by using webmail.your-doman.com, for example. The latter will work only by setting up a CNAME record for a subdomain because such a record set up for the main domain address makes it impossible to use e-mail addresses.