[ietf-dkim] forward movement, please? (was RE: Are lookalike domains like parent domains?)

[Dave Crocker]

Arvel Hathcock wrote:
> I propose that the side advocating removal of the NXDOMAIN check agree 
> to language which makes this step AT LEAST a SHOULD and preferably a MUST.


Having the ADSP specification include normative text that calls for validating 
the From field domain name does two things:

1. Couples an entirely separate and more generally useful mechanism (checking 
domain name validity) to one that is considerably more limited (ADSP).

2. Modifies SMTP.  (Yes, really.)

Having non-normative text that describes it serves to promote the idea but not 
couple it with the fate of ADSP.

d/
-- 

   Dave Crocker
   Brandenburg InternetWorking
   bbiw.net