Cache only and reverse mapping

/dev/rob0 rob0 at
Thu Dec 15 14:28:48 UTC 2011

On Thursday 15 December 2011 02:07:12 sasa sasa wrote:
> For an ISP, is there any risk in configuring BIND DNS as cache
> only and adding customer's reverse mapping zones? Any other
> possible implementations?

To be precise, when you are serving any zones authoritatively, your 
server is no longer "cache only".

There is no difference between zones and other zones, as 
far as named/DNS is concerned. If you have been delegated reverse DNS 
for your [customer's] netblocks, you do indeed need to serve those zones.

I am not sure what you are asking regarding "risk" and other 
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