Consensus on Tree Walk? A comment in the minutes suggested that consensus was forming around Tree Walk for Policy Discovery. I do not have that impression. Instead, the "strongly favor" and "strongly oppose" voices seem about equal, with the balance determined by those who, like myself, are tepidly in favor.
Does Tree Walk eliminate the PSL? I am concerned that support for Tree Walk is driven by antipathy to the PSL, rather than for the functional capabilities that Tree Walk provides. The PSL is needed for alignment, which is essential to the determination of the PASS or FAIL result. Eliminating use of the PSL for policy discovery is trivial unless it is also replaced for alignment. We have discussed three options for alignment: · The publicsuffix.org list which has conspicuous limitations. · Downward-only alignment, which has been rejected as incompatible with current practice. · DNS flags, a topic which was apparently not pursued during the meeting. Do Complex Organizations want policy flexibility? Granular DMARC policies can be achieved under DMARCv1 by using many policy records with p=<value>. Tree walk simplifies that process by allowing intermediate subtrees to be configured using sp=<value> policies. We need input from complex organizations to indicate whether this capability is something that they would value and use. Do we want to provide a sub-tree alignment option? Suppose that “security.example.edu” does not want any other part of “ example.edu” to be sending emails on their behalf, so they want to limit alignment to their sub-tree only. This approach becomes feasible if (a) we use tree walk and (b) we implement a clause which indicates “top of tree for alignment purposes”. I suspect that this would have some appeal to parts of some universities and other complex organizations, but again we would need those organizations to affirm that it would be useful. Doug Foster On Wed, Nov 17, 2021 at 9:40 AM Barry Leiba <barryle...@computer.org> wrote: > Minutes from the DMARC session at IETF 112 are posted on the meeting > materials page: > https://datatracker.ietf.org/meeting/112/session/dmarc > > Direct link to the minutes: > https://datatracker.ietf.org/meeting/112/materials/minutes-112-dmarc.html > > Corrections are welcome. > > Barry > > _______________________________________________ > dmarc mailing list > dmarc@ietf.org > https://www.ietf.org/mailman/listinfo/dmarc >
_______________________________________________ dmarc mailing list dmarc@ietf.org https://www.ietf.org/mailman/listinfo/dmarc
