[ietf-dkim] THIS IS A MULTIPLE 5322.FROM MESSAGE

[Dave CROCKER]

On 10/6/2010 9:17 AM, John R. Levine wrote:
> Is it DKIM's job to make the verification fail, or is it an MUA's job to do
> something reasonable with malformed messages?

At one level, that's merely an implementation choice.  At another level, it is a 
question of whether conformance enforcement MUST occur at all.

The discussions have tended to assume that it MUST occur, by virtue of the DKIM 
requirement for 'conformant' messages.  Steve's point cleverly suggests that 
DKIM itself can dodge the issue by -- once again -- having things simply rest on 
verification outcome.

I find the simplicity and sufficiency of Steve's point pretty darn appealing. 
To emphasize:  It's sufficient because it focuses on DKIM's actual goal and does 
not expand that scope.

d/
-- 

   Dave Crocker
   Brandenburg InternetWorking
   bbiw.net