https://issues.apache.org/SpamAssassin/show_bug.cgi?id=6728

--- Comment #10 from Kevin A. McGrail <[email protected]> 2011-12-16 00:52:01 
UTC ---
(In reply to comment #9)
> "I get this part.  We should make URIBL.pm and EvalDNS.pm flag ignore 
> responses
> outside of 127.0.0.1[sic] and possibly even trigger BLOCKED."
> 
> YES!  Definently trigger "blocked." ;-)  Takes care of the registration 
> problem
> too.

So you want to trigger blocked for anything outside of 127.0.0/24 or 127/8?  


> "Here is where I get confused.  Functional lists should explicitly return
> 0.0.0.0 to what query?"
> 
> ...To "query refused"  (abuse/excessive traffic), if the proper DNS RC of
> refused with 0 answers is not performed.  I suggest "0.0.0.0" because it is
> outside of 127/8 (see processing above) and "all zeros" means no information. 
> Returning "127.0.0.255" as some do is irresponsible.  If they returned a code
> outside of 127/8, all we'd need is the range checking code above.

We're outside of my comfort zone with the standard-tracks for DNSBL but I am
unsure why 127.0.0.255 is irresponsible in DNSWL's case because they don't use
bitwise logic for their list.  

Anyway, why 0.0.0.0 as opposed to an explicitly valid answer defined as a
Blocked answer?  What's the benefit to the change?

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