Re: [dmarc-ietf] non-mailing list use case for differing header domains
Laura Atkins <laura@wordtothewise.com> Tue, 28 July 2020 15:22 UTC
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From: Laura Atkins <laura@wordtothewise.com>
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Date: Tue, 28 Jul 2020 16:22:41 +0100
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Subject: Re: [dmarc-ietf] non-mailing list use case for differing header domains
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> On 28 Jul 2020, at 16:14, Alessandro Vesely <vesely@tana.it> wrote: > > On Tue 28/Jul/2020 11:07:19 +0200 Laura Atkins wrote: >>> On 28 Jul 2020, at 08:36, Alessandro Vesely <vesely@tana.it wrote: >>> On Tue 28/Jul/2020 08:54:02 +0200 Autumn Tyr-Salvia wrote: > >>>> # The resulting message uses executive@secondbrand.com in the friendly >>>> From: field, but firstbrand.com in the SMTP MAIL FROM domain, so the headers are no longer aligned for SPF. >>> # >>> >>> Heck, can't they DKIM sign? >> This really misses Autumn’s point. [...] >> Autumn has presented a very real world scenario that demonstrates the >> overall complexity of mail management operationally. Your solution “sign >> with DKIM” has significant barriers to adoption. For instance, assume that >> there is code installed on the mailserver that will grab the 5322.from >> address and sign with the appropriate DKIM key. How many domains are >> involved? How many different mailservers? How long will this solution take >> to deploy? Banks do not move quickly and, for the obvious reasons, any >> changes to security require multiple reviews and assurances that the >> implications are understood. > > > If the bank delegates a subdomain to each trusted subsidiary, each subsidiary could manage their keys on their local DNS and email servers. If the bank can afford "relaxed" DKIM alignment, they can sign with d=local-branch.bank.example and From: transactions@bank.example. What's the risk of doing so? That does not address the problem Autumn brought up at all. laura -- Having an Email Crisis? We can help! 800 823-9674 Laura Atkins Word to the Wise laura@wordtothewise.com (650) 437-0741 Email Delivery Blog: https://wordtothewise.com/blog
- [dmarc-ietf] non-mailing list use case for differ… Autumn Tyr-Salvia
- Re: [dmarc-ietf] non-mailing list use case for di… Alessandro Vesely
- Re: [dmarc-ietf] non-mailing list use case for di… Dotzero
- Re: [dmarc-ietf] non-mailing list use case for di… Laura Atkins
- Re: [dmarc-ietf] non-mailing list use case for di… Douglas E. Foster
- Re: [dmarc-ietf] non-mailing list use case for di… Alessandro Vesely
- Re: [dmarc-ietf] non-mailing list use case for di… Laura Atkins
- Re: [dmarc-ietf] non-mailing list use case for di… Alessandro Vesely
- Re: [dmarc-ietf] non-mailing list use case for di… Hector Santos
- Re: [dmarc-ietf] non-mailing list use case for di… Doug Foster
- Re: [dmarc-ietf] non-mailing list use case for di… John Levine
- Re: [dmarc-ietf] non-mailing list use case for di… Jesse Thompson
- Re: [dmarc-ietf] non-mailing list use case for di… Todd Herr
- Re: [dmarc-ietf] non-mailing list use case for di… Dave Crocker
- Re: [dmarc-ietf] non-mailing list use case for di… John R Levine
- Re: [dmarc-ietf] non-mailing list use case for di… Todd Herr
- Re: [dmarc-ietf] non-mailing list use case for di… Dave Crocker
- Re: [dmarc-ietf] non-mailing list use case for di… Autumn Tyr-Salvia
- Re: [dmarc-ietf] non-mailing list use case for di… Todd Herr
- Re: [dmarc-ietf] non-mailing list use case for di… Dave Crocker
- Re: [dmarc-ietf] non-mailing list use case for di… John R Levine
- Re: [dmarc-ietf] non-mailing list use case for di… John R Levine
- Re: [dmarc-ietf] non-mailing list use case for di… Alessandro Vesely
- Re: [dmarc-ietf] non-mailing list use case for di… Alessandro Vesely
- Re: [dmarc-ietf] non-mailing list use case for di… Laura Atkins
- Re: [dmarc-ietf] non-mailing list use case for di… Todd Herr
- Re: [dmarc-ietf] non-mailing list use case for di… Laura Atkins
- Re: [dmarc-ietf] non-mailing list use case for di… Hector Santos
- Re: [dmarc-ietf] non-mailing list use case for di… Douglas E. Foster
- Re: [dmarc-ietf] non-mailing list use case for di… Jeremy Harris
- Re: [dmarc-ietf] non-mailing list use case for di… Ken O'Driscoll
- Re: [dmarc-ietf] non-mailing list use case for di… Hector Santos
- Re: [dmarc-ietf] non-mailing list use case for di… Hector Santos
- Re: [dmarc-ietf] non-mailing list use case for di… Jesse Thompson
- Re: [dmarc-ietf] non-mailing list use case for di… Murray S. Kucherawy
- Re: [dmarc-ietf] non-mailing list use case for di… Jesse Thompson
- Re: [dmarc-ietf] non-mailing list use case for di… Jesse Thompson
- Re: [dmarc-ietf] non-mailing list use case for di… Jim Fenton
- Re: [dmarc-ietf] non-mailing list use case for di… Luis E. Muñoz
- Re: [dmarc-ietf] non-mailing list use case for di… Alessandro Vesely
- [dmarc-ietf] LSAP - Lightweight Signer Authorizat… Hector Santos
- Re: [dmarc-ietf] non-mailing list use case for di… Jesse Thompson
- Re: [dmarc-ietf] non-mailing list use case for di… John Levine
- Re: [dmarc-ietf] non-mailing list use case for di… Jesse Thompson
- Re: [dmarc-ietf] non-mailing list use case for di… John R Levine
- Re: [dmarc-ietf] non-mailing list use case for di… Neil Anuskiewicz
- Re: [dmarc-ietf] non-mailing list use case for di… Douglas E. Foster
- Re: [dmarc-ietf] non-mailing list use case for di… John Levine
- Re: [dmarc-ietf] non-mailing list use case for di… Douglas E. Foster
- Re: [dmarc-ietf] non-mailing list use case for di… John R Levine
- Re: [dmarc-ietf] non-mailing list use case for di… Murray S. Kucherawy
- Re: [dmarc-ietf] non-mailing list use case for di… John R Levine
- Re: [dmarc-ietf] non-mailing list use case for di… Dave Crocker
- Re: [dmarc-ietf] non-mailing list use case for di… Douglas E. Foster
- Re: [dmarc-ietf] non-mailing list use case for di… Ken O'Driscoll
- Re: [dmarc-ietf] non-mailing list use case for di… Benny Pedersen
- Re: [dmarc-ietf] non-mailing list use case for di… Kurt Andersen (b)
- Re: [dmarc-ietf] non-mailing list use case for di… Jim Fenton
- Re: [dmarc-ietf] non-mailing list use case for di… Jim Fenton
- Re: [dmarc-ietf] non-mailing list use case for di… Dotzero
- Re: [dmarc-ietf] non-mailing list use case for di… Alessandro Vesely
- Re: [dmarc-ietf] non-mailing list use case for di… Jesse Thompson
- Re: [dmarc-ietf] non-mailing list use case for di… Dotzero
- Re: [dmarc-ietf] non-mailing list use case for di… Alessandro Vesely
- Re: [dmarc-ietf] non-mailing list use case for di… Autumn Tyr-Salvia
- Re: [dmarc-ietf] non-mailing list use case for di… John Levine
- Re: [dmarc-ietf] non-mailing list use case for di… Murray S. Kucherawy
- Re: [dmarc-ietf] non-mailing list use case for di… Jesse Thompson
- Re: [dmarc-ietf] non-mailing list use case for di… Douglas E. Foster
- Re: [dmarc-ietf] non-mailing list use case for di… John Levine
- Re: [dmarc-ietf] non-mailing list use case for di… John Levine
- Re: [dmarc-ietf] non-mailing list use case for di… Dave Crocker
- Re: [dmarc-ietf] non-mailing list use case for di… Alessandro Vesely
- Re: [dmarc-ietf] non-mailing list use case for di… Douglas E. Foster
- Re: [dmarc-ietf] non-mailing list use case for di… Hannu Aronsson
- Re: [dmarc-ietf] non-mailing list use case for di… Hannu Aronsson
- Re: [dmarc-ietf] non-mailing list use case for di… Tõnu Tammer
- Re: [dmarc-ietf] non-mailing list use case for di… Dave Crocker
- Re: [dmarc-ietf] non-mailing list use case for di… Jim Fenton
- Re: [dmarc-ietf] non-mailing list use case for di… Alessandro Vesely
- Re: [dmarc-ietf] non-mailing list use case for di… Douglas E. Foster
- Re: [dmarc-ietf] third party authorization, not, … John Levine
- Re: [dmarc-ietf] third party authorization, not, … Dave Crocker
- Re: [dmarc-ietf] third party authorization, not, … Dotzero
- Re: [dmarc-ietf] non-mailing list use case for di… Neil Anuskiewicz
- Re: [dmarc-ietf] non-mailing list use case for di… John R Levine
- Re: [dmarc-ietf] non-mailing list use case for di… Autumn Tyr-Salvia
- Re: [dmarc-ietf] non-mailing list use case for di… John R Levine
- Re: [dmarc-ietf] third party authorization, not, … Murray S. Kucherawy
- Re: [dmarc-ietf] third party authorization, not, … Dave Crocker
- Re: [dmarc-ietf] third party authorization, not, … John Levine
- Re: [dmarc-ietf] third party authorization, not, … Alessandro Vesely
- Re: [dmarc-ietf] third party authorization, not, … Dotzero
- Re: [dmarc-ietf] third party authorization, not, … Alessandro Vesely
- Re: [dmarc-ietf] third party authorization, not, … Dave Crocker
- Re: [dmarc-ietf] third party authorization, not, … Hector Santos
- Re: [dmarc-ietf] Time for a change Douglas E. Foster
- Re: [dmarc-ietf] Time for a change Dotzero
- Re: [dmarc-ietf] non-mailing list use case for di… Jesse Thompson
- Re: [dmarc-ietf] third party authorization, not, … Murray S. Kucherawy
- Re: [dmarc-ietf] non-mailing list use case for di… Jesse Thompson
- Re: [dmarc-ietf] Time for a change Murray S. Kucherawy
- Re: [dmarc-ietf] Time for a change Dave Crocker
- Re: [dmarc-ietf] Time for a change Dotzero
- Re: [dmarc-ietf] non-mailing list use case for di… Alessandro Vesely
- Re: [dmarc-ietf] non-mailing list use case for di… Autumn Tyr-Salvia
- Re: [dmarc-ietf] finer grained org domain John R Levine
- Re: [dmarc-ietf] finer grained org domain Tim Wicinski
- Re: [dmarc-ietf] finer grained org domain Dave Crocker
- Re: [dmarc-ietf] finer grained org domain Dave Crocker
- Re: [dmarc-ietf] finer grained org domain Seth Blank
- Re: [dmarc-ietf] non-mailing list use case for di… Jesse Thompson
- Re: [dmarc-ietf] Time for a change Murray S. Kucherawy
- Re: [dmarc-ietf] third party authorization, not, … Alessandro Vesely
- Re: [dmarc-ietf] third party authorization, not, … Kurt Andersen (b)
- Re: [dmarc-ietf] third party authorization, not, … Murray S. Kucherawy
- Re: [dmarc-ietf] third party authorization, not, … Douglas E. Foster
- Re: [dmarc-ietf] third party authorization, not, … Alessandro Vesely
- Re: [dmarc-ietf] third party authorization, not, … Murray S. Kucherawy
- Re: [dmarc-ietf] third party authorization, not, … Tim Draegen
- Re: [dmarc-ietf] third party authorization, not, … Brandon Long
- Re: [dmarc-ietf] third party authorization, not, … Jesse Thompson
- Re: [dmarc-ietf] third party authorization, not, … Dotzero
- Re: [dmarc-ietf] third party authorization, not, … Alessandro Vesely
- Re: [dmarc-ietf] third party authorization, not, … Douglas E. Foster
- Re: [dmarc-ietf] non-mailing list use case for di… Jim Fenton
- Re: [dmarc-ietf] non-mailing list use case for di… Brandon Long
- Re: [dmarc-ietf] non-mailing list use case for di… Jesse Thompson
- Re: [dmarc-ietf] third party authorization, not, … Murray S. Kucherawy
- Re: [dmarc-ietf] third party authorization, not, … Murray S. Kucherawy
- Re: [dmarc-ietf] third party authorization, not, … John Levine
- Re: [dmarc-ietf] third party authorization, not, … Douglas E. Foster
- Re: [dmarc-ietf] third party authorization, not, … Murray S. Kucherawy
- Re: [dmarc-ietf] third party authorization, not, … Dotzero
- Re: [dmarc-ietf] third party authorization, not, … Alessandro Vesely
- Re: [dmarc-ietf] third party authorization, not, … Dotzero
- Re: [dmarc-ietf] third party authorization, not, … Laura Atkins
- Re: [dmarc-ietf] third party authorization, not, … Dotzero
- Re: [dmarc-ietf] third party authorization, not, … John R Levine
- Re: [dmarc-ietf] third party authorization, not, … Dotzero
- Re: [dmarc-ietf] third party authorization, not, … John R Levine
- Re: [dmarc-ietf] third party authorization, not, … Dotzero
- Re: [dmarc-ietf] third party authorization, not, … Jim Fenton
- Re: [dmarc-ietf] third party authorization, not, … John Levine
- Re: [dmarc-ietf] third party authorization, not, … Jim Fenton
- Re: [dmarc-ietf] third party authorization, not, … Alessandro Vesely
- Re: [dmarc-ietf] third party authorization, not, … Doug Foster
- Re: [dmarc-ietf] third party authorization, not, … Dotzero
- Re: [dmarc-ietf] third party authorization, not, … Jim Fenton
- Re: [dmarc-ietf] third party authorization, not, … Dotzero
- Re: [dmarc-ietf] third party authorization, not, … Douglas E. Foster
- Re: [dmarc-ietf] third party authorization, not, … Dotzero
- Re: [dmarc-ietf] third party authorization, not, … Jim Fenton
- Re: [dmarc-ietf] third party authorization, not, … Hector Santos
- Re: [dmarc-ietf] third party authorization, not, … Alessandro Vesely
- Re: [dmarc-ietf] third party authorization, not, … Douglas E. Foster
- Re: [dmarc-ietf] third party authorization, not, … Alessandro Vesely
- Re: [dmarc-ietf] draft-levine-dkim-conditional-04… John Levine
- Re: [dmarc-ietf] draft-levine-dkim-conditional-04… Douglas E. Foster
- Re: [dmarc-ietf] draft-levine-dkim-conditional-04… Murray S. Kucherawy
- Re: [dmarc-ietf] third party authorization, not, … Murray S. Kucherawy
- Re: [dmarc-ietf] my forward signer draft, third p… John Levine
- Re: [dmarc-ietf] my forward signer draft, third p… Rolf E. Sonneveld