Split domain for forwarders or both

Chris Buxton chris.p.buxton at gmail.com
Fri May 21 18:52:04 UTC 2010

>>> I have example.com setup on a public dns and example.com set up on a 
>>> local dns.
>>> If a record is not found in the local, how can I force it to look for a 
>>> record in the public dns, for the same domain.
>> From my experience, there is no way to do this.  Once an answer is made authoritatively from your internal server, you can't tell it to go somewhere else.  Authoritative is authoritative, and even if you know there's a better answer somewhere else, you're stuck with what you've gone.
> What I've had to do in the past is add entries from external to internal, so that you don't need the "if it fails, try here" functionality.  It doubles the administrative overhead and maintenance, and can cause some headaches when something is missed, but it's the best solution I've found so far.

In the absence of some extra application that manages both copies and handles this replication for you, this double entry is the only solution.

Chris Buxton
BlueCat Networks

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