On 15/12/2017 09:27, Grant Taylor via mailop wrote:
> On 12/14/2017 03:28 PM, Brandon Long via mailop wrote:
>
>> My point is that -all is policy, and most people ignore the policy portions
>> of SPF because it completely fails a lot of forwarding cases.
>
> Every postmaster (or organization behind them) has the prerogative to run
> their mail server(s) the way that they want to.
Agreed, if I publish a -all (which I do and have done for a very very
long time), I expect receivers doing SPF processing of my domains
messages, to honor that! Who the hell are they to assume they know my
network and its senders better than me.
> -all is asking receivers to reject mail that doesn't pass.
> Yes.
>
> I, as a sender, have decided that I want receivers to reject messages that do
> not match my published policy. Period. End of story.
agreed!
How does DMARC fail at forwarding? DMARC (SPF and / or DKIM) specify
who is allowed to send email, including forwarding, on the purported
sending domains behalf.
Over the large number of years I've run SPF I've had no complaints about
forwarding problems, even most mailing lists get it right, something I
can *NOT* say about DKIM, which has given us grief, so much so, we
stopped using it.
--
Kind Regards,
Noel Butler
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