On Fri, 15 Jan 2016 04:01:28 AM Joel W. Shea via luv-main wrote:
Widespread use of DMARC will result in changes to well established conventions. I don't personally object to having the list server rewrite the "From" field and add a "Reply-to" header that designates the original sender; but some people have needs which differ from mine, and for them it can be an inconvenience.
Yes, it also has the potential to reduce the distributed and decentralised nature of email;
Not at all. The distributed and decentralised part of email is inherently not mailing lists. By definition lists are centralised!
I.e. if you're not sending via a "reputable" service provider, your mail wont get routed. This is antithetical to an open Internet, Internet neutrality, and it could also be considered a means of censorship by some.
No it just means that you have to use other services. If you and a bunch of like minded people wanted to have a list where no-one used DKIM/DMARC then there's nothing stopping you from doing it. As for censorship, if you are worried about that then you probably shouldn't be using Gmail at all.
I believe this has also been suggested by others in the past, but went nowhere; along with the concept of an "X-Original-Authentication-Result" header, although those could be easily forged, and we're back to the subjectivity of trust problem.
The real issue is that nothing we agree on matters much if Google and Yahoo don't agree.