Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Dependency Removal
Todd Herr <todd.herr@valimail.com> Wed, 21 June 2023 13:37 UTC
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From: Todd Herr <todd.herr@valimail.com>
Date: Wed, 21 Jun 2023 09:36:44 -0400
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To: dmarc@ietf.org
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Subject: Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Dependency Removal
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On Wed, Jun 21, 2023 at 4:22 AM Alessandro Vesely <vesely@tana.it> wrote: > On Tue 20/Jun/2023 15:40:11 +0200 Todd Herr wrote: > > > > I can't speak for Patrick, but I don't think he's necessarily thinking > of > > different encryption algorithms here. > > > > Not all who wish to have their email DKIM signed have the luxury that > you > > have John of full control of the DKIM signing process. I'm specifically > > thinking of the entity (call them Marty Marketer) who has the authority > to > > employ a third party to send authenticated mail on behalf of a domain, > mail > > that the third party can and will DKIM sign using the entity's domain. > > Sadly, Marty does not have the authority to update DNS for that domain > in > > order to publish a DKIM public key. This leads to challenges as the > third > > party presents to Marty a public key to publish, and Marty tries to > figure > > out to whom to pass along this information and in what format. This > leads > > to screen caps, or cutting and pasting errors, misdirected mail chains, > > etc., etc. > > > > Is this the way it should be? Probably not, but it's a reality for many, > > and it's a problem we don't as an industry have an answer for yet. If we > > did, there wouldn't be people in the other thread reporting such a high > > percentage of DKIM failures due to malformed/missing keys. > > > > Now, of course we could argue that Marty shouldn't be left to their own > > devices to engage third party senders, and that should solely be the > > province of the IT staff that manages DNS, but I fear that the energy > > required to type and distribute such words would be wasted. > > > Creating more and more publishing mechanisms could reproduce the situation > of > SPF, whereby customers of the same third party can easily impersonate one > another. > > DKIM signatures have to be created by MSAs upon user authentication. MSAs > which use smarthosts, IMHO, had better sign just the header fields they > control > rather than delegate signing. Doesn't Marty have any option on that? > > > I'm afraid I've done a poor job of making my point, as it seems that you haven't understood what I was trying to say. Let me try again. The scenario I'm describing here isn't referring to the actual DKIM signing of any given message. Rather, I'm talking about the publication of the DKIM public key in DNS to support the validation of signed mail. In this scenario, Marty has hired a third party email service provider (e.g., WeSendMail) to handle a class of bulk sending on behalf of Marty's organization (e.g., WeSellStuff.com). Marty wants WeSendMail to DKIM sign that mail using d=wesellstuff.com, and WeSendMail can do that, so Marty clicks a button or whatever in the WeSendMail UI to make that happen. The UI pops up a screen that says "Please publish this TXT record in your DNS", where the name is WSMWSSSelector._domainkey.wesellstuff.com and the value is the DKIM public key. Marty doesn't control DNS for wesellstuff.com . Maybe Marty knows who does control DNS, and Marty is good at cutting and pasting, and Marty can successfully communicate the request to the DNS people for wesellstuff.com. Maybe Marty has no clue who to engage, or maybe Marty misses a character in the cutting and pasting, or maybe Marty just does a screen capture and the DNS folks mess up something when transcribing the contents of the picture, or... Might something like Domain Connect (https://www.domainconnect.org/) solve this? Sure, it could, and its website even describes a scenario identical to what I'm trying to describe here. However, Domain Connect seems to be a bit hand-wavy on the concept of authorization when it comes to making changes to DNS zones, and in this scenario, Marty doesn't have those credentials. -- *Todd Herr * | Technical Director, Standards & Ecosystem *e:* todd.herr@valimail.com *p:* 703-220-4153 *m:* 703.220.4153 This email and all data transmitted with it contains confidential and/or proprietary information intended solely for the use of individual(s) authorized to receive it. If you are not an intended and authorized recipient you are hereby notified of any use, disclosure, copying or distribution of the information included in this transmission is prohibited and may be unlawful. Please immediately notify the sender by replying to this email and then delete it from your system.
- [dmarc-ietf] DMARC2 & SPF Dependency Removal Tobias Herkula
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Murray S. Kucherawy
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Seth Blank
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Barry Leiba
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Seth Blank
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Barry Leiba
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Barry Leiba
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Seth Blank
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Tobias Herkula
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Scott Kitterman
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Scott Kitterman
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Seth Blank
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Barry Leiba
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Tobias Herkula
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Benny Pedersen
- Re: [dmarc-ietf] version bump to DMARC2 John Levine
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Hector Santos
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Hector Santos
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Dotzero
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Barry Leiba
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Dotzero
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Scott Kitterman
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Barry Leiba
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Scott Kitterman
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Douglas Foster
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Barry Leiba
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Barry Leiba
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Barry Leiba
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Alessandro Vesely
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Barry Leiba
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Brotman, Alex
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Murray S. Kucherawy
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Scott Kitterman
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Alessandro Vesely
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Alessandro Vesely
- Re: [dmarc-ietf] version bump to DMARC2 Emil Gustafsson
- Re: [dmarc-ietf] version bump to DMARC2 Barry Leiba
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Barry Leiba
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Hector Santos
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Barry Leiba
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Hector Santos
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Barry Leiba
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Murray S. Kucherawy
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Alessandro Vesely
- Re: [dmarc-ietf] Errors in the tree walk, was ver… Alessandro Vesely
- [dmarc-ietf] Version bump: was DMARC2 & SPF Depen… Scott Kitterman
- Re: [dmarc-ietf] Version bump: was DMARC2 & SPF D… Tim Wicinski
- Re: [dmarc-ietf] Version bump: was DMARC2 & SPF D… Scott Kitterman
- Re: [dmarc-ietf] Version bump: was DMARC2 & SPF D… Tim Wicinski
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Jesse Thompson
- Re: [dmarc-ietf] PSD flag vs Version bump John Levine
- Re: [dmarc-ietf] PSD flag vs Version bump Barry Leiba
- Re: [dmarc-ietf] PSD flag vs Version bump John R Levine
- Re: [dmarc-ietf] PSD flag vs Version bump Scott Kitterman
- Re: [dmarc-ietf] PSD flag vs Version bump Richard Clayton
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Richard Clayton
- Re: [dmarc-ietf] Version bump: was DMARC2 & SPF D… Alessandro Vesely
- Re: [dmarc-ietf] PSD flag vs Version bump Alessandro Vesely
- Re: [dmarc-ietf] PSD flag vs Version bump Barry Leiba
- Re: [dmarc-ietf] version bump to DMARC2 Emil Gustafsson
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Jim Fenton
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Hector Santos
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Barry Leiba
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Tero Kivinen
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Barry Leiba
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Douglas Foster
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Murray S. Kucherawy
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Seth Blank
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Alessandro Vesely
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Richard Clayton
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Tero Kivinen
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Tero Kivinen
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Tero Kivinen
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Scott Kitterman
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Murray S. Kucherawy
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Alessandro Vesely
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Sebastiaan de Vos
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Douglas Foster
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Alessandro Vesely
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Sebastiaan de Vos
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Michael Kliewe
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Jan Dušátko
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Douglas Foster
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Ken Simpson
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Murray S. Kucherawy
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Hector Santos
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal John Levine
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Hector Santos
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Douglas Foster
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Jan Dušátko
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Ken Simpson
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Barry Leiba
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Alessandro Vesely
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Patrick Ben Koetter
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… John R Levine
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Benny Pedersen
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Wei Chuang
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal David Verdin
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Alessandro Vesely
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Tobias Herkula
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Douglas Foster
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Scott Kitterman
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Todd Herr
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal John Levine
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Alessandro Vesely
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Todd Herr
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Alessandro Vesely
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Sebastiaan de Vos
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Douglas Foster
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Sebastiaan de Vos
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Todd Herr
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Sebastiaan de Vos
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Scott Kitterman
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Douglas Foster
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Murray S. Kucherawy
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Barry Leiba
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Dotzero
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Hector Santos
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Hector Santos
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Ken Simpson
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Emil Gustafsson
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… John Levine
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Emanuel Schorsch
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Douglas Foster
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… John R Levine
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Hector Santos
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Emanuel Schorsch
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… John R Levine
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Emanuel Schorsch
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Hector Santos
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Barry Leiba
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… John R Levine
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Hector Santos
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Barry Leiba
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Douglas Foster
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Alessandro Vesely
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Alessandro Vesely
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Hector Santos
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Hector Santos
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Jan Dušátko
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Barry Leiba
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Florian.Kunkel
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Scott Kitterman
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Jan Dušátko
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Murray S. Kucherawy
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Alessandro Vesely
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Douglas Foster
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Barry Leiba
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… John Levine
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Alessandro Vesely
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Alessandro Vesely
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Douglas Foster
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Barry Leiba
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Tobias Herkula
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Hector Santos
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Hector Santos
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Hector Santos
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Alessandro Vesely
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Barry Leiba
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Scott Kitterman
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Douglas Foster
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Emanuel Schorsch
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Murray S. Kucherawy
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Douglas Foster
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Murray S. Kucherawy
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… John Levine
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Barry Leiba
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Tero Kivinen
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Jan Dušátko
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Alessandro Vesely
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Murray S. Kucherawy
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Hector Santos
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Hector Santos
- Re: [dmarc-ietf] easier DKIM, DMARC2 & SPF Depend… Tero Kivinen
- [dmarc-ietf] Why does DKIM fail when SPF succeeds… Matthäus Wander
- Re: [dmarc-ietf] Why does DKIM fail when SPF succ… Murray S. Kucherawy
- Re: [dmarc-ietf] Why does DKIM fail when SPF succ… Matthäus Wander
- Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal Neil Anuskiewicz
- Re: [dmarc-ietf] Why does DKIM fail when SPF succ… OLIVIER HUREAU
- Re: [dmarc-ietf] Why does DKIM fail when SPF succ… Matthäus Wander