Domain > click Domain name > Hosting > DNS settings
Look what i've found in Plesk Help (Setting Up Hosting Account for a Web Site):
Note: If the site is hosted on another machine, and you wish to set up your control panel's DNS server only to serve the DNS zone for that site, select either Frame forwarding or Standard forwarding option. With standard forwarding, a user is redirected to the site and the actual site's URL is shown in the user's browser, so the user always knows that he or she is redirected to another URL. With frame forwarding, a user is redirected to the site without knowing that the site actually resides at another location. For example: your customer has a free personal web site with his or her Internet Service Provider or a free Web host, and the Web site address is
http://www.geocities.com/~myhomepage. The customer purchased a second level domain name
www.myname.com and wants you to provide domain forwarding to his Web site. In this case you would normally choose the Frame forwarding service. See the chapter Serving Domain Names for Sites Hosted on Other Servers (Domain Forwarding) for details.
Note: If you transferred this domain name from another Web host, you will need to update the host DNS address with the domain name registrar so as to point to your name servers: log in to your registrar's web site, locate the forms used to manage the domain host pointers, and replace the current DNS host settings with your name servers' host names. The information on new name servers will spread across the DNS system within 48 hours.
If you have registered several domain names that you would like to point to a site hosted on this server, you should set up domain aliases. Refer to the Setting Up Additional Domain Names for a Site (Domain Aliases) section for details.
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