If you want to park your domains on our DNS servers than enter the following DNS servers for your domains. With this setup all your domains/subdomains changes are automaticaly updated from Plesk Control panel.
Primary DNS: ns1.mambix.com
Secondary DNS: ns2.mambix.com
Secondary Backup DNS: ns3.mambix.com

If you have other DNS servers you have to change the IP so that the domain is pointing to 85.25.151.230 in your domain control panel. With this option you have to make all domain/subdomain changes manualy in your domain control panel!