On Thu 10/Dec/2020 00:37:19 +0100 Brandon Long wrote:
On Wed, Dec 9, 2020 at 2:27 PM Michael Thomas <[email protected]> wrote:
On 12/8/20 4:51 PM, Brandon Long wrote:
On Mon, Dec 7, 2020 at 8:31 PM John R Levine <[email protected]> wrote:
On Mon, 7 Dec 2020, Murray S. Kucherawy wrote:
The original intent back in RFC 5451 was to relay only those details
that an MUA might care about, such as the DKIM result (so you can
display something representing a "pass" or "fail" on a message) and
maybe the domain name found in a passing signature (an early shot at
caring about alignment when rendering a message). ... >>>
I suppose but 5451 also says it might be useful to message filters.
Right, there are clearly MUAs that do some amount of spam filtering, so
disposition of p=quarantine would seem to be useful for that. >>
Is there any evidence for that though? I would assume that the folks on
this list use a diverse set of MUA's and would be in a position to tell
us if some of them do. >
Gmail does put messages with disposition quarantine into the spam label, but
we don't rely on the A-R header to pass that information from the smtp
transaction to the mailbox.
As an SMTP filter, zdkimfilter can reject, but it cannot quarantine. That is
MDA's territory. It passes quarantine information in an A-R comment[*]. If
there was a standard way to convey that info, it could be used by MUAs as well
as by any other software not specifically designed around zdkimfilter's
idiosyncrasies.
Best
Ale
--
[*] https://www.tana.it/sw/zdkimfilter/zdkimfilter.html#dmarcand
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