I'm still at a bit of a loss as to how one can effectively do a "greedy" seal over a broken chain in a deterministic fashion. I'm also not sure why one would report much of anything (back to the hypothetical sending domain) from a broken chain, given that it has no validity.
--Kurt On Fri, Aug 17, 2018 at 12:43 PM, Brotman, Alexander < [email protected]> wrote: > I'd say that I agree with John (and Seth) on this one. I'm not sure if a > consensus was reached, though it doesn't appear so. I think the idea that > being able to have trust in the broken chain information potentially sent > back to us as a report has value. It's hard to be sure that the value will > override the cost of the signature, but as John suggested below, I can't > imagine the cost to be very high. > > -- > Alex Brotman > Sr. Engineer, Anti-Abuse > Comcast > > > -----Original Message----- > From: dmarc [mailto:[email protected]] On Behalf Of John R Levine > Sent: Wednesday, August 15, 2018 3:54 PM > To: Dave Crocker <[email protected]> > Cc: [email protected] > Subject: Re: [dmarc-ietf] WGLC ARC-16 concern on Section 5.1.2 - cv=fail > should sign greedily > > On Wed, 15 Aug 2018, Dave Crocker wrote: > > This is a very different kind and degree of vague (and without > > precedent, I believe (unless someone can point to operational > > experience on the net that is similar?) > > I believe there are lots of trace fields that don't have a concrete use. > I am not familiar with any standardized use of the values in the ID field > in Received headers, although they're often handy in practice to track down > the details of what happened to a message. > > Can you explain in words the damage that cv=fail signatures will cause, > and a rough idea of the cost to ARC signers and verifiers? To me the > answers are none, and trivial. > > R's, > John > > _______________________________________________ > dmarc mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/dmarc > > _______________________________________________ > dmarc mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/dmarc >
_______________________________________________ dmarc mailing list [email protected] https://www.ietf.org/mailman/listinfo/dmarc
