Re: [dmarc-ietf] PSD flag vs Version bump

2023-06-11 Thread Barry Leiba
> What if MIME-Version changed on every new MIME type? (I presume you mean "subtype", as we've only defined two new media types: example (RFC 4735) and font (RFC 8081).) This is a red herring, as MIME was specifically designed to be extensible by adding new media types and subtypes, as well as

Re: [dmarc-ietf] PSD flag vs Version bump

2023-06-11 Thread Alessandro Vesely
On Sun 11/Jun/2023 00:32:01 +0200 Richard Clayton wrote: Personally (and I am not writing on behalf of $DAYJOB$) I think that signal "I know things have changed and am setting things up accordingly" is most clearly sent by bumping the version number, rather than relying on other more subtle

Re: [dmarc-ietf] PSD flag vs Version bump

2023-06-10 Thread Richard Clayton
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 In message <20230610210457.b4c22e924...@ary.qy>, John Levine writes >We have two of the largest mail operators in the world saying that if >they can't tell which org domain scheme domain expects, they won't >implement the tree walk. We have to do

Re: [dmarc-ietf] PSD flag vs Version bump

2023-06-10 Thread Scott Kitterman
On June 10, 2023 9:04:57 PM UTC, John Levine wrote: >It appears that Scott Kitterman said: >> >>What's the incentive that any existing DMARC users (senders or receivers) >>would have to invest additional resources in another email >>authentication protocol? > >We have two of the largest

Re: [dmarc-ietf] PSD flag vs Version bump

2023-06-10 Thread John R Levine
Why not say "SHOULD use tree walk", and then document, as explanation for "SHOULD" instead of "MUST", non-normative reasons why you might not? I don't think that will fly with the VLMPs. The mandatory PSD seems relatively easy to implement, just add it to the template you use for everything.

Re: [dmarc-ietf] PSD flag vs Version bump

2023-06-10 Thread Barry Leiba
Hm... Why not say "SHOULD use tree walk", and then document, as explanation for "SHOULD" instead of "MUST", non-normative reasons why you might not? Waddyathink? Barry On Sat, Jun 10, 2023 at 5:05 PM John Levine wrote: > > It appears that Scott Kitterman said: > > > >What's the incentive

Re: [dmarc-ietf] PSD flag vs Version bump

2023-06-10 Thread John Levine
It appears that Scott Kitterman said: > >What's the incentive that any existing DMARC users (senders or receivers) >would have to invest additional resources in another email >authentication protocol? We have two of the largest mail operators in the world saying that if they can't tell which