If you wish to direct a domain address that you have to another domain address or subdomain, one of the ways to do this would be to use a CNAME record. By creating such a record, the domain being pointed loses all of its records (A, MX, and so forth) and instead, it takes the A record of the domain it's redirected 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 name and not only will it be directed to the Internet site you have set up, but it will also be displayed in the web browser address bar at all times. Alternative possible uses of a CNAME record are to point all of the visitors from different subdomains to their main Internet domain, or to use the webmail service of your webhosting company by using webmail.your-doman.com, for instance. The latter will work only by setting up a CNAME record for a subdomain due to the fact that this type of a record set up for the main domain renders it impossible to use e-mail addresses.
