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Re: [dmarc-ietf] Identification of an email author (was - Re: IETF Mailing Lists and DMARC)

Dave Crocker <dcrocker@gmail.com> Mon, 07 November 2016 23:41 UTC

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From: Dave Crocker <dcrocker@gmail.com>
X-Google-Original-From: Dave Crocker <dhc@dcrocker.net>
Subject: Re: [dmarc-ietf] Identification of an email author (was - Re: IETF Mailing Lists and DMARC)
To: Ned Freed <ned.freed@mrochek.com>
References: <678C2FBA-A661-4556-A300-5C08562B5F8A@iii.ca> <CABa8R6vHdt75NFKW3s6xOzLcq=jmVAHDPX0tjLRdGpYSTP2cYA@mail.gmail.com> <33b100ac-c035-8b49-22e1-edbe47f41919@dcrocker.net> <CABa8R6u7WbbeXzkhkNM46RYtMSw7V9FT2m_LvKLHaFDvF3cw3A@mail.gmail.com> <CO2PR00MB0103566D260F9BFEC7166C9B96A20@CO2PR00MB0103.namprd00.prod.outlook.com> <5FA03832-D38F-47F2-B974-7C903C7513FD@fugue.com> <CO2PR00MB01034350A8C90A1E039336F796A20@CO2PR00MB0103.namprd00.prod.outlook.com> <WM!9664810c615567bf070fc649d954183e561aaa67977ebde37433238a98da7930f34ca08db8c430e48500f1e63f6d7622!@mailstronghold-1.zmailcloud.com> <713098835.18678872.1478547678821.JavaMail.zimbra@peachymango.org> <969d43d4-78c9-6e44-e186-ca6ed6fa3445@dcrocker.net> <01Q71GG3KUM8011H9Q@mauve.mrochek.com>
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Date: Mon, 07 Nov 2016 15:40:56 -0800
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On 11/7/2016 3:08 PM, Ned Freed wrote:
>> And while I recall something of the EAI discussion, I'm not recalling
>> this permission's being returned.  Nor am I finding it in rfc6854:
>
>>       https://tools.ietf.org/html/rfc6854#section-2
>
>> So, please point to the formal specification that permits a From: field
>> to have no email address.
>
> RFC 6854.


That's what I cited, too.  It makes much of allowing the group construct 
(to permit aggregating various forms of the same addressee).

I assume the 'no address' permission is based on the CWFS alternative in:

    group-list      =   mailbox-list / CFWS / obs-group-list

which the document doesn't explain at all.  Nor does it impose the 
RFC733 fall-back of requiring a Sender: field, with an email address.

If there's something else permitting no addressee, I'm still missing it.

d/

-- 

   Dave Crocker
   Brandenburg InternetWorking
   bbiw.net

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