[Asrg] Round 2 of the DNSBL BCP

[Andrew D Kirch]

Matt Sergeant wrote:
>>    Some mail systems are unable to differentiate between these various
>>    results or flags, however, so a public DNSBL MUST NOT include
>>    opposing or widely different meanings -- such as 127.0.0.23 for
>>    "sends good mail" and 127.0.0.99 for "sends bad mail" -- within the
>>    same DNS zone.
>>     
>
> Not sure why this is a MUST NOT. If people are dumb enough to use a  
> mixed list in a broken way they get what they deserve. What's the  
> justification?
>
> Matt.
>
>   
This isn't just broken lists it's broken software.  Not all software 
which uses DNSBL's differentiates by returned response.

Andrew