On 2/9/24 14:09, Bill Cole via Exim-users wrote:
>> Should I add an Authentication-Results header for mail coming in via 587?
>
> NO.
>
>> Or am I misusing/abusing ARC?
>
> That.
>
> ARC is for forwarding systems.
Probably per the real intent of ARC, yes.
But it's technically possible to regard what an MSA does
as "forwarding", and you could reasonably add an AR on
reception on 587 to label whatever exim did to authenticate
the client (eg. an SMTP AUTH method such as PLAIN) -
and initiate an ARC chain using that.
Exim will include the value from authenticated_sender in
the ${authresults()} expansion, if one is set.
--
Cheers,
Jeremy
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