> On Apr 12, 2023, at 9:41 AM, John R Levine <jo...@taugh.com> wrote:
> 
> When we say that mail systems that don't fit the DMARC threat profile 
> shouldn't publish DMARC policies, we have good reasons to say so, and that's 
> what our standards need to say if we're serious about interoperating.
> 

With DMARCbis, If domains MUST NOT publish p=reject is mandated for certain 
classes of domain mail, then it should also apply to MUST NOT honor p=reject as 
a recommendation for verifiers.  If so,

- Should MDA receivers ignore sender p=reject for local users?
- Should MLM strip the submission security (From rewrite)?

—
HLS




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