> On 23 Sep 2020, at 22:49, Seth Blank <seth=40valimail....@dmarc.ietf.org> > wrote: > > As Chairs, we'd like to push for more discussion of this topic. > > I've heard some discussion that this distinction belongs in a BCP, not the > base spec, but regardless of where text lands (and it certainly shouldn't be > normative language) the Chairs strongly believe that having rough consensus > on clear definitions is key to progressing the bis effort effectively. We > strongly agree with Dave Crocker's position here: > https://mailarchive.ietf.org/arch/msg/dmarc/XXE3r5FUozl6LVohv8rTkn5QG4E/ > <https://mailarchive.ietf.org/arch/msg/dmarc/XXE3r5FUozl6LVohv8rTkn5QG4E/> > > Original thread: > https://mailarchive.ietf.org/arch/msg/dmarc/8f3AMoQ_7e3i7zEFTTtK-KnDgzI/ > <https://mailarchive.ietf.org/arch/msg/dmarc/8f3AMoQ_7e3i7zEFTTtK-KnDgzI/> > Follow up thread from Todd Herr: > https://mailarchive.ietf.org/arch/msg/dmarc/zHti6fc5Rs4SmfMB3jVK_DQnemA/ > <https://mailarchive.ietf.org/arch/msg/dmarc/zHti6fc5Rs4SmfMB3jVK_DQnemA/> > > To repaste the original context for this conversation: > > Many different entities participate in DMARC, and to each, there is a > different definition of what is needed to "implement" or participate in DMARC. > > Should the spec be clear about the different participants, and what it means > for each to participate partially and completely? > > As a straw man to start conversation (assume this is all wrong): > > The domain owner: > - partially participating: valid record? > - complete participation: no part of the domain hierarchy can be spoofed > by an unauthenticated sender? > > The receiver/MTA: > - partially participating: validates DMARC? > - complete participation: validates DMARC and ARC, and sends aggregate > reports? > > The intermediary (is this different than a receiver?): > - partially: validates DMARC? > - complete participation: validates DMARC and validates and seals ARC?
The service provider / outgoing MTA (think SendGrid or other bulk MTAs) - partially participating: allows domain owner to verify using DKIM or SPF - fully participating: allows domain owner to verify using both DKIM and SPF laura -- Having an Email Crisis? We can help! 800 823-9674 Laura Atkins Word to the Wise la...@wordtothewise.com (650) 437-0741 Email Delivery Blog: https://wordtothewise.com/blog
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