Quick note because I'm about to run out, but updated the draft to get in ahead of the deadline!
Richard got back to me and doesn't like nd=, so in version 4 I used his proposal of pp= instead, putting responsibility on the receiving system to provide information about the domain it's signing on behalf of, and defining that the relationship can be inferred from the MX records or leaving space to define a DNS key for it as well. This will allow bounce records to be created from the MX domain for example. Anyway, we can discuss the various approaches in Montreal! It's good to have both documented. Bron. On Fri, Oct 17, 2025, at 22:43, Bron Gondwana wrote: > Hi All, > > I've posted a couple of updated drafts. Particularly the one where I have > co-authors, I haven't run this text past them, so we could for sure pull my > changes out again, they're just a proposal! But I wanted to get aligned > versions in the datatracker before the draft submission deadline, and I'm > traveling all of next week. > > I renamed the Delta stuff "MailVersion"; and I've proposed putting in mime > part binary hashes. The format is very much not locked in, but it was an > example of what versioning could look like, with the sender adding one of > these headers with hashes and signing that using something other than DKIM2 > potentially, allowing you to know that attachments hadn't been tampered with > (for example) or that an attachment had been removed but the text hadn't been > tampered with. > > And I added the nd= that I discussed in my previous email. > > Enjoy, and please provide feedback! > > Thanks, > > Bron. > > > > -- > Bron Gondwana, CEO, Fastmail Pty Ltd / Fastmail US LLC > [email protected] > > > _______________________________________________ > Ietf-dkim mailing list -- [email protected] > To unsubscribe send an email to [email protected] > -- Bron Gondwana, CEO, Fastmail Pty Ltd / Fastmail US LLC [email protected]
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