On Fri, May 6, 2022 at 10:58 AM Andrew C Aitchison via mailop < mailop@mailop.org> wrote:
> > On Fri, 6 May 2022, Grant Taylor via mailop wrote: > > On 5/6/22 9:14 AM, Luis E. Muñoz via mailop wrote: > >> I think the response to those issues are in part the cause for the loop > you > >> cleverly explained before. > > > > Indeed. > > > > These are the very issues that caused me to be disinclined to stand my > ARC > > milter back up when it fell over after an update. > > > > ARC seems to be dependent on trusting the signer. That trust is > inherently > > difficult to establish. > > Can anyone (Brandon?) tell us how Google scores the forwarder for a > forwarded ARC-signed message compared to the same message without ARC ? > > I would hope that the forwarder would get some credit for making > the details of the previous hop sufficiently reliable to score. > > If so, then it is useful to ARC-sign a message when forwarding, even > when we have no data upon which to evalate incoming ARC signatures. > There is a chicken & egg problem with ARC signing, and partially due to that our usage of them is still very much a work in progress. Brandon
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