On Sun 23/Jan/2022 14:00:20 +0100 Douglas Foster wrote:
Option 1
The tree walk could duplicate RFC 7489 by specifying that the walk
continues until a PSD policy is found or the TLD is reached. Then
the last policy found before the termination point is the
organizational policy, and that record’s SP policy is used. (Of
course, the PSD policy applies if no prior policy has been found.)
That was Todd's first attempt to specify it. It was what I understood
during the tree walking discussion, and I'd stick to it.
Replacing the concept of Organizational Domain with that of Fallback
Domain is acceptable —although more expensive— for finding a DMARC
record. However, when the policy found implies relaxed mode,
determining the alignment based on the Fallback Domain is akin to
partition organizations into several subtrees. That can break
currently working arrangements.
Best
Ale
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