[ietf-dkim] marketing dkim

[Dave CROCKER]

On 8/20/2010 11:18 AM, John Levine wrote:
>> Why isn't a signed 822.From sufficiently accurate sender information
>>from a provider who cares?
> ...
>     I sign everything, and make no effort to validate stuff on
> the From: line.


They key point is that DKIM makes no statement about the basis by which a given 
signature is made or not made, AND different signers do indeed have very 
different criteria.

No doubt some do validate the From: field.  Others merely mean "the message went 
through my MTA".  Any assertion of From: field assessment is therefore far 
outside the scope of the DKIM base specification.

d/
-- 

   Dave Crocker
   Brandenburg InternetWorking
   bbiw.net