Mitigation of server's load by queries for non-existing domains

Tomas Hozza thozza at
Wed Jan 13 13:35:24 UTC 2016

On 12.01.2016 18:16, Tony Finch wrote:
> Tomas Hozza <thozza at> wrote:
>> Recently I was trying to find a mechanism in BIND that could prevent the
>> server from processing a recursive query for non-existing domains.
> Have a look at
>> I was thinking about using RPZ with QNAME policy trigger, but this
>> applies only to the responses to queries and still makes the server to
>> try to resolve it.
> RPZ has a "qname-wait-recurse no" option.

This is exactly the thing I was looking for.

Thank you very much!


> Tony.

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