Plesk DNS Server
The DNS settings for a website/hosting are stored in a Zone File
The Plesk Help says:
Managing DNS Records
A domain name is a human-readable Internet address of a website that can be used to reach the website.
The translation of human-readable names into machine-readable ones is carried out by the Domain Name System, or DNS for short.
It is very important for the DNS settings for your websites to be correct, otherwise the operation of your services may be disrupted.
For example, your domain may become unavailable, or mail may fail to reach your mail server.
Plesk can function as the primary or a secondary name server for your domains. DNS settings are configured automatically,
but can be changed from the interface.
If the DNS service for your domains is provided by third-party name servers, you can disable the DNS service in Plesk.
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Adding and Modifying DNS Records
This is flagged as being an advanced activity in the Plesk Help files.
Plesk recomend that you use the "auto" configuration setting for this. The use of Plesk, as opposed to cPanel website
administration is probably the most important decision when choosing a hosting service.
