On Tue 25/Apr/2023 20:27:18 +0200 Scott Kitterman wrote:
My recollection is that a general formulation that I proposed had at least
some traction out of both groups:
[some appropriate description] domains MUST NOT publish restrictive DMARC
policies due to interoperability issues
Leaving aside (for now) the question of what goes into [some appropriate
description] and with the assumption that there will be some non-normative
discussion to amplify whatever that is and probably give some indication about
what domains might do to not be one of those domains, is there anyone who just
can't live with that formulation of the situation?
Me, for one. Because more than 98% of domains are going to fall into the
description, however we word it, that statement makes the whole I-D
nonsensical. Cannot we just tell the problem without MUSTard?
In any case, using the complement of [some appropriate description] is
certainly easier. For example:
Forcing authentication into Internet mail by publishing restrictive DMARC
policies breaks some well established patterns of usage. Publishing such
policies is thus RECOMMENDED only for domains [in this other appropriate
description].
Best
Ale
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