On Thu, Mar 14, 2019 at 10:27 AM Nico Williams <n...@cryptonector.com> wrote:
> | 4. Policy Validation > | > | When sending to an MX at a domain for which the sender has a valid > | and non-expired MTA-STS Policy, a Sending MTA honoring MTA-STS MUST > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > ^^^^^^^^ > | check whether: > | > | [...] > | > | 5. Policy Application > | > | When sending to an MX at a domain for which the sender has a valid, > | non-expired MTA-STS Policy, a Sending MTA honoring MTA-STS applies > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > ^^^^^^^^ > | the result of a policy validation failure in one of two ways, > | depending on the value of the policy "mode" field: > | > | [...] > > How does this not allow a sending MTA to... not honor MTA-STS? > It's allowed to not *generally* honor STS, but this text does not have any provision for just ignoring it for some messages. Any other reading seems extremely strained. -Ekr > Nico > -- >
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