On 2020-12-20 23:07, Michael Thomas wrote:
On 12/20/20 2:01 PM, Benny Pedersen wrote:
hopefully maillists stops dkim signing, its the incorrect place to
solve breaking dkim
Sorry, ARC is warmed over DKIM, and an experiment. DKIM is a full
internet standard and expressly intended for lists,
On 12/20/20 2:01 PM, Benny Pedersen wrote:
hopefully maillists stops dkim signing, its the incorrect place to
solve breaking dkim
Sorry, ARC is warmed over DKIM, and an experiment. DKIM is a full
internet standard and expressly intended for lists, etc to resign if
they broke the
On 2020-12-20 19:13, John R Levine wrote:
On Sun, 20 Dec 2020, Alessandro Vesely wrote:
question is who steps up to provide such shared lists.
Dnswl.org counts about 25K domains.
I suppose one might try them but I expect most of them are not sending
forwarded mail.
only sending to
Like any security problem, we need to minimize false positives (desired
mail being blocked) and false negatives (unwanted or malicious mail being
allowed). ARC will hopefully address the false positives, but the false
negative issue remains. The situation does not seem hopeless, but
the topic
On Fri 18/Dec/2020 21:05:43 +0100 John R Levine wrote:
[ failure reports leak PII including forwarded recipients ]
Are failure reports about forwarded messages still useful? If not so much,
perhaps we could deplore them.
There's no mechanical way to tell whether a message has been
On Sun, 20 Dec 2020, Alessandro Vesely wrote:
question is who steps up to provide such shared lists.
Dnswl.org counts about 25K domains.
I suppose one might try them but I expect most of them are not sending
forwarded mail.
I've finally gotten around to doing ARC checks in my SMTP daemon
On Fri, Dec 18, 2020 at 4:55 PM Michael Thomas wrote:
>
> On 12/15/20 8:01 AM, Todd Herr wrote:
>
>
> I'm not sure there's anything actionable about DMARC's policy values.
>
> you mean p=quarantine, or p=* in general?
>
Depending on the level of sophistication of a receiving email system, a
On Fri 18/Dec/2020 21:05:43 +0100 John R Levine wrote:
Info which is encoded in such a way that only the sender can understand rises
no PII concern, IMHO. A sender could cache sent messages and devise how to
encode the corresponding filenames in DKIM selectors. Reporting just the
failed
On Sat 19/Dec/2020 21:50:34 +0100 Dotzero wrote:
On Sat, Dec 19, 2020 at 2:50 PM John Levine wrote:
In article <1e61f7c4-c6d2-5dab-dfc7-f1fd740e1...@tana.it> you write:
Now my tiny MX stores 115,225 domains total. And I have no idea how I
could add a trust-ARC-seals boolean field to each
Count| Bytes | Who
++---
10 (23.3%) | 61316 (13.9%) | Alessandro Vesely
6 (14.0%) | 29727 ( 6.7%) | John Levine
5 (11.6%) | 95589 (21.7%) | Douglas Foster
5 (11.6%) | 34737 ( 7.9%) | Michael Thomas
3 ( 7.0%) | 82453 (18.7%) |
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