When a domain is created in Plesk, the DNS records are automatically generated and you might not want them because you are using your own server. If you disable the DNS service, Plesk gives you the possibility to re-activate it through the DNS Settings. In order to do that, follow the steps described below:
1. Log into myTophost Panel and click on Plesk Login in order to connect to the Plesk of the plan that you are interested in.
2. In the Websites & Domains tab, click on DNS Settings.
3. Click on Enable.