How to direct DNS requests for local hosts to one DNS server and DNS requests for external hosts to another DNS server
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Article ID: 166389
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Products
ProxySG Software - SGOS
Issue/Introduction
You have a number of internal hosts whose DNS entries are stored on an internal DNS server. However, all other (external) hosts need to be resolved by an external, e.g. ISP, DNS server. How do you split these DNS requests?
Resolution
Point your primary DNS group to your external (e.g. ISP) DNS server.
Create a new DNS group (called localdns in this example).
In this new group, identify the IP address of your local DNS server(s) and your internal domain(s).