Stub Zones
The concept of stub zones is unique to Microsoft DNS. A stub zone is essentially a zone that contains no information about the members in a domain but simply serves to forward queries to a list of designated name servers for different domains. A stub zone subsequently contains only NS, SOA, and glue records. Glue records are essentially A records that work in conjunction with a particular NS record to resolve the IP address of a particular name server. A server that hosts a stub zone for a namespace is not authoritative for that zone.
As shown in Figure 10.7, the stub zone effectively serves as a placeholder for a zone that is authoritative on another server. It allows a server to forward queries that are made to a specific zone to ...
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