Monitoring of "blackholed" DNS servers

[Christopher.Harrington at emc.com]

All,

 

We have a list of DNS servers that we do not want our BIND DNS server
interacting with. We can put the IP addresses of those servers in the
blackhole substatement under options. Is there a way to monitor for when our
DNS server tries to communicate with servers that are in the blackhole list?
Is there a certain level of logging that needs to be enabled to see this?

 

Thanks,

 

--Chris

 

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