cache dead records

[Matus UHLAR - fantomas]

On 22.10.09 23:45, netfox at royal.net wrote:
> We are using bind9 for DNS Cache.
> What the problem is, sometime the IP address for a domain is dead, but  
> Bind won't know, and still responds the dead IP to clients, after that  
> clients access the sites failed.
> So is there a way to do health check for destination IPs before  
> responding the DNS answers?

what should it respond in case of unavailability? NXDOMAIN?
or refuse the service? 

You are trying to resolve problem on bad place. It's almost as bad as
translating NXDOMAIN responses to A records pointing to a server where...

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Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
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