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dns root hints

Posted on 2008-06-26
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Last Modified: 2010-04-21
If you configure your DNS server to use a forwarder would it need/ever use the root hints?
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Question by:jjc_mn
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by:KCTS
KCTS earned 400 total points
ID: 21873939
useful as a fallback - but a forwarder is much more efficient
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by:jjc_mn
ID: 21874011
what i'm really asking is that if the forwarder doesn't for some reason return a response would my DNS server accept that or would, if it had root hints, attempt to resolve it that way too before giving up?

I'm in a private network, not the Internet. currently it just uses a forwarder however it's failing on some queries it shouldn't. I was wondering if I add the root hints woud it even use it?
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msguru earned 1400 total points
ID: 21874070
The answer to your question is:-
If the "Do not use recursion for this domain" check box (on the Forwarders tab) is ticked, then the root hints will not be used.
If the "Do not use recursion for this domain" check box (on the Forwarders tab) is NOT ticked, and ALL the forwarders don't return a response, then the root hints ARE used.

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by:Jan Springer
ID: 21875674
I would recommend using the root hints and running a caching server.  
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by:MSE-JNegus
MSE-JNegus earned 200 total points
ID: 21876574
If you are in a private network and do not need to resovle queries for the internet a forwarder should be all you need.  I suggest that you check the "Do not use recursion" box and if you are if certain queries are failing I would enable debug logging and see where the queries are failing.
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by:jjc_mn
ID: 31470937
Thanks all
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