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[Emailcore] Re: [Last-Call] Re: Re: Re: draft-ietf-emailcore-as-28 ietf last call Secdir review

"Martin J. Dürst" <duerst@it.aoyama.ac.jp> Thu, 07 May 2026 08:21 UTC

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Date: Thu, 07 May 2026 17:20:18 +0900
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To: Rob Sayre <sayrer@gmail.com>, John C Klensin <john-ietf@jck.com>
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From: "Martin J. Dürst" <duerst@it.aoyama.ac.jp>
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Hello Rob, others,

On 2026-04-30 08:04, Rob Sayre wrote:
> On Wed, Apr 29, 2026 at 3:46 PM John C Klensin <john-ietf@jck.com> wrote:
> 
>>
>> Following that logic, and especially the shrine-rebuilding analogy,
>> perhaps we should abandon SMTP entirely and start over.
>>
> 
> That's not quite how it works. Ise Jingu has two plots of land. They make a
> new one while the other is still standing, so there is no temple-free
> period of time.

[minor correction: It's a shrine (Shintoist) and not a temple (Buddhist).]


> Here, what we would do is SMTPQ (SMTP over QUIC) and use that change to
> ditch all of the backward compatibility stuff. 8-bit clean, TLS by default,
> etc.

They also try to rebuild the new shrine as close as possible to the 
original, not with new technology. So the analogy is a bit off.


> I may have thought this over. :)
> 
> I still don't think this MUST needs to be there. Just delete it. But of
> course other have opinions too.

One thing I haven't yet seen mentioned: RFCs are often used in RFPs. Now 
imagine an RFC that includes the AS, but without the disputed paragraph. 
The issuer of the RFP may assume that citing the AS will assure a usable 
result. Some bidder may include software that does not allow clear text 
mail. That would then be conformant to the AS, but would lead to some 
mails being lost. There may be a discussion between the issuer and the 
bidder, and they may blame the IETF. I'd prefer to avoid that.

Regards,   Martin.

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