Re: mailing lists are complicated, was Email explained from first principles
"John R Levine" <[email protected]>
| Newsgroups | gmane.ietf.smtp |
|---|---|
| Message-ID | <[email protected]> |
On Sat, 29 May 2021, Alessandro Vesely wrote: > ARC is a completely different thing. It introduces a third party, the > sender, which modifies the message header in such a way to induce receivers > to accept a message even if it fails DMARC. Semantically, it is very similar > to Dave's Use of the Sender Header Field. Ho, it is really nothing like that. It provides log info to so that the final recipient can retroactively do filtering that the intermediate hosts didn't. It is true that you do have to know which intermediate hosts might plausibly do that, but small systems rarely get ARC'ed mail from more than a handful of places. > I see no conflict between these two methods. Just wondering, but has anyone implemented the mutant DKIM you are proposing? Is there a spec or an I-D? Regards, John Levine, [email protected], Taughannock Networks, Trumansburg NY Please consider the environment before reading this e-mail. https://jl.ly