Re: Now that mail transfer is encrypted: stricter DMARC?

Hi Philipp,

On Tue, Aug 27, 2024 at 8:16 AM Philipp Marek <[email protected]> wrote:

> > Does this affect anybody on this mailing list? Any comments with
> > respect to the stricter policy?
>
> - Thanks for the hard work
>
> - My biggest worry is about notifications and error messages to admin@
> not arriving
>

You mean because of the fact that more mails might classified as SPAM on
our host?

If that's your worry, I can say that that's not the impact of this setting:
the "quarantine" value is read from DNS by hosts processing mail claiming
to originate from the @common-lisp.net domain. These processors establish
the authenticity of the mail through SPF and DKIM. If the authenticity test
fails, the current setting ("none") has no effect on mail delivery. The
proposed value ("quarantine") does have effect on mail delivery: the value
requests to separate from the regular mail flow. Most mail providers do
this by sending those mails straight to SPAM.

Either way, we will receive reports from the big mail processing companies
(fastmail, zoho, microsoft, google, ...) describing what they did with mail
flow coming from @common-lisp.net. There are applications to process these
mails to have (visual) integrated reports; we don't have that software in
place at the moment. It would be nice to process the individual reports
into a visualization like that. Maybe that's something someone else can
work on.

-- 
Bye,

Erik.

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