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Re: [ietf-dkim] Discussion of Consensus check: Domain Existence Check

2008-06-11 14:57:46

On Jun 11, 2008, at 12:00 PM, Frank Ellermann wrote:

Douglas Otis wrote:

Which TLDs should be ignored?

It's up to the implementors of the proprietary mail exchange you  
have in mind to get this right, if they wish to implement the  
Internet message format they will find some fresh specifications in  
2822upd and RFC.ietf-usefor-usefor.

ADSP also purports as being applicable at MUAs.  As such, this issue  
is not limited to any specific protocol, proprietary SMTP or otherwise.

Do you agree there should be a means for making exceptions?

Do you agree that implementation details don't belong in an RFC, and  
that this is no rocket science?

An algorithm that necessitates exceptions to retain operability for  
crucial systems, should at least declare the necessity in the draft.   
Specific details of a general mechanism would not be included, except  
perhaps as example code.

MS Exchange is considered stupid

Allegedly it is now even possible to get a complete mail header. RFC  
4871 didn't discuss this, ADSP also doesn't need to discuss it, it's  
an implementation detail.

Disagree.  Unlike DKIM (RFC4871) where use is self evident, a practice  
assertion must declare which transport protocol is covered.  Otherwise  
it is impossible to discern specifically what is being asserted.  Are  
messages signed for SMTP, or NNTP, for example.

IMHO, a draft defining what might be an SMTP domain should exclude  
AAAA from a list that provides confirmation of SMTP support.

In the great 2821bis flamewar some weeks ago some folks agreed to  
address this issue in a separate draft.

It seems ADSP should also suspend efforts in how to validate a domain  
and move this to a separate draft.

Judging by the growing impatience, this strategy should be  
published in a separate draft from that of ADSP.

Yes, please move this part to the SMTP list.  And if you want a  
bunch of reserved TLDs check out that the 2606bis draft has all you  
need for this business.

While 2606bis has expired, at least RFC2606 should be referenced in  
the separate effort.  The otis-dkim-adsp draft will be modified to  
reflect adoption of a separate strategy.  Of course, this is not the  
WG document.

-Doug
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