Note! Disable recursion if you wish this server to act only as authoritative name server for the configured zones.
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+ (set 0 to disable)
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The maximum queries a client can make per minute on average based on the sample size.
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+ minutes (valid range 1-60; default 5)
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The sample size in minutes to be used for limiting queries per client.
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+ minutes (valid range 1-60; default 1)
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The interval to sample client query stats.
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Note! Queries Per Minute (QPM) feature will limit requests from a client based on its IP address. The QPM limit configured will be compared with the average count from the sample size which means a client may exceed the QPM limit for a given minute but won't exceed for the given sample size in minutes.