How to make the Plesk’s DNS server act as a primary back in Plesk
To make the Plesk’s DNS server act as a primary back, perform the following steps:
1 – Logged in to Plesk.
2 – Go to Websites & Domains and click the domain name whose DNS settings you want to manage.
3 – Click DNS Settings.
4 – Click Master/Slave to switch DNS server mode.
The original resource records for the zone will be restored.