Change the DNS zone replication scope for contoso.com from forest-wide (ForestDnsZones) to domain-wide (DomainDnsZones). First Requirement (Prevent child domain from receiving data): Changing the scope to All DNS servers in the domain (DomainDnsZones) restricts the zone data to only the domain controllers running DNS within the contoso.com domain, excluding domain controllers and DNS servers in the child domain corp.contoso.com. Second Requirement (Minimize replication traffic): It stops unnecessary replication across the entire forest to the child domain, containing updates strictly to the parent domain partition. Steps: 1. Open DNS Manager (dnsmgmt.msc) on a domain controller in contoso.com. 2. Expand the contoso.com forward lookup zone properties. 3. On the General tab, click Change next to the Replication setting. 4. Select To all DNS servers running on domain controllers in this domain (DomainDnsZones) and click OK. Reference: https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/create-apply-custom-application-directory-partition
Change the DNS zone replication scope for contoso.com from forest-wide (ForestDnsZones) to domain-wide (DomainDnsZones).
First Requirement (Prevent child domain from receiving data):
Changing the scope to All DNS servers in the domain (DomainDnsZones) restricts the zone data to only the domain controllers running DNS within the contoso.com domain, excluding domain controllers and DNS servers in the child domain corp.contoso.com.
Second Requirement (Minimize replication traffic):
It stops unnecessary replication across the entire forest to the child domain, containing updates strictly to the parent domain partition.
Steps:
1. Open DNS Manager (dnsmgmt.msc) on a domain controller in contoso.com.
2. Expand the contoso.com forward lookup zone properties.
3. On the General tab, click Change next to the Replication setting.
4. Select To all DNS servers running on domain controllers in this domain (DomainDnsZones) and click OK.
Reference:
https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/create-apply-custom-application-directory-partition