To restore the default DNS records, perform the following steps:
1 - Logged in to Plesk, https://your domain name:8443.
2 - Go to Websites & Domains.
3 - Click DNS Settings.
4 - Click Reset to Default.
5 - Click OK.
* NOTE: This will undo all the changes made to the DNS zone and recreate it according to the server-wide DNS template. Note that any custom records you may have added to the zone will be lost.
