On Thu, 5 Oct 2023, Bernardo Reino via mailop wrote:

On Thu, 5 Oct 2023, Slavko via mailop wrote:

Dňa 2. 10. o 18:34 Brandon Long via mailop napísal(a):
 I've raised a bug to take a look, this looks like a too broad dkim replay
 rule.

I am not sure if that is the same, but in last two days i see these bounces from github's DMARC rua address for my DMARC reports:

   ** Message blocked **

    Your message to dm...@github.com has been blocked. See technical
    details below for more information.

   The response was:

   Message bounced due to organizational settings.

The latest one contains in message/delivery-status (if that helps):

    Reporting-MTA: dns; googlemail.com
    Received-From-MTA: dns; prvs=064225bada=dmarc_rp...@slavino.sk
    Arrival-Date: Wed, 04 Oct 2023 18:21:05 -0700 (PDT)
    X-Original-Message-ID: <84e154c2366c2...@primex.skk>

    Final-Recipient: rfc822; dm...@github.com
    Action: failed
    Status: 4.4.2
    Diagnostic-Code: smtp; Message bounced due to organizational
    settings.
    Last-Attempt-Date: Wed, 04 Oct 2023 18:21:06 -0700 (PDT)

I have the same issue. Unfortunately there's a lot of servers which request DMARC reports, but then outright reject them (or use an invalid address).

My list of no_dmarc_reporting_domains.txt (in RSPAMD) keeps growing, slowly.

I trust that you are applying RFC 7489 section 7.1. where appropriate.
If the domain for dmarc reports is not the same as the requesting domain,
you must check that the report domain is willing to accept these reports.

--
Andrew C. Aitchison                      Kendal, UK
                   and...@aitchison.me.uk
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