When you add a zone to a domain, Parallels Pro Control Panel automatically creates a Start of Authority (SOA) record. Each DNS zone has an SOA record. This record designates the start of the zone and specifies where in the domain name space the name server has authority. The record also specifies timing information for a zone transfer, which is the process of transferring lookup data from the master name server to the slave server.
Parallels Pro provides default information for the SOA records that are created for all the zones on the name server. This default information will apply to every SOA record created, unless you manually change the specific SOA record.
You can modify the SOA information default settings if you want to make a change that will affect every SOA record on the name server.
If you want to make a change that applies only to a specific SOA record, you can modify just the zone-specific SOA record.