Re: RFC 6471 and "listing the Internet" as a punishment

On 1/25/12 12:11 PM, SM wrote:
> At 11:23 25-01-2012, Dave Warren wrote:
>> I have to wonder, if a DNSBL were being operated entirely on a free 
>> basis (rather than a freemium model), might it not be better to take 
>> advantage of the large caches out there rather than having thousands 
>> of individual servers performing the same mundane set of lookups 
>> individually?
>
> There are no large caches out there.  That's not how DNS works in my 
> opinion.
Dear SM,

Many providers offer non-authoritative DNS servers.  SOPA and PIPA bills 
attempt to regulate which domains are to be excluded, and ignore 
authoritative DNS traffic not cached by providers.  Of course, only 
accepting results from authoritative servers would reduce performance.  
Infrequently requested records might be dropped prior to expiry to 
liberate cache.
>> Obviously this negates the DNSBL's ability to try and pull cash out 
>> of the larger entities, but purely from a resource management point 
>> of view, if someone wants to offer a front-line cache for free, 
>> surely that should reduce load.
>
> It is expensive to provide such a cache for free.  Why would someone 
> want to offer such a service for free?
Use of these caching services generate valuable information and reduce 
network traffic between peers.

Regards,
Doug Otis