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

On 1/24/12 10:19 AM, Emanuele Balla (aka Skull) wrote:
> In truth there's
> in point 3.3:
>
> «  Note: In Section 3.4, it is noted that some DNSBLs have shut down in
>     such a way to list all of the Internet.  Further, in Section 3.5,
>     DNSBL operators MUST NOT list 127.0.0.1.  Therefore, a positive
>     listing for 127.0.0.1 SHOULD indicate that the DNSBL has started
>     listing the world and is non-functional. »
>
> and again, in point 3.5:
>
> «  A functioning DNSBL MUST NOT list 127.0.0.1.  There are a number of
>     mail server implementations that do not cope with this well, and many
>     will use a positive response for 127.0.0.1 as an indication that the
>     DNSBL is shut down and listing the entire Internet.»

"Listing 127.0.0.1" is not the same as "returning 127.0.0.1".

-- D