On Tue, Mar 24, 2015 at 1:38 PM, J. Gomez <[email protected]> wrote:
> I know for sure I will publish only p=none for my client's domains, and > use DMARC only as a reporting tool, as long as DMARC's p=reject cannot be > reliably relied on. But I would love to be able to reliably rely on DMARC's > p=reject. > I'm not sure I agree with the claim that p=reject is unreliable. It seems to me that it's working as designed, and the results are deterministic. It's not flaky. How receivers use it is the mushy part, but that's really outside of the protocol. Even if DMARC didn't have these mediator problems, there still would be no ultimate compulsion for receivers to do what domain owners ask. It might be a lot more likely that they would comply without reservations, but there would still be some operators that don't. So just to be clear, are you using "reliable" here to talk about how receivers apply it? -MSK
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