[ietf-dkim] We need a BCP

[Steve Atkins]

On May 15, 2008, at 9:18 AM, Frank Ellermann wrote:

> Douglas Otis wrote:
>
>> This avoids the myriad of SMTP opt-out strategies such as
>> "MX .", "TXT v=spf1 -all", or "TXT DKIM=DISCARDABLE".
>
> Digression, finally I recall a technical problem (above the
> clear disadvantages of opt-out at least for IPv6) with the
> null-MX idea, one of those weird "alternate roots"

Then that's not the domain name system, so is likely out of scope for  
anything DNS related.

> managed
> to have an IPv4 (A record) for its wannabe-root.

If the person doing the DNS query is falsifying data, there's not a  
lot you can do to defend against that, but it's their problem, not  
yours.

Cheers,
   Steve