Dear Mailman-Users,

   I have a Mailman instance running on a vServer with Plesk, but am using
   email services from my provider (different IP and MX-Domain than the
   Mailman machine). Emails in the format n...@domain.tld generally seem
   to work. However, when I send an email from the same adress to one of
   my Mailman lists at subdomain.domain.tld, I get many bouncees who will
   eventually be removed from the list.

   My question is: What is wrong here, my SPF or DKIM settings OR my
   Mailman-DMARC settings?

   My Mailman-DMARC settings are the following:

   from_is_list: No
   anonymous_list: No
   dmarc_moderation_action: Munge from
   dmarc_quarantine_moderation_action: Yes
   dmarc_none_moderation_action: No

   From Google I received reports of which the following XML is a
   clipping:

   <?xml version="1.0" encoding="UTF-8" ?>
   <feedback>
     <report_metadata>
       <org_name>google.com</org_name>
       <email>noreply-dmarc-supp...@google.com</email>
       ...
     </report_metadata>
     <policy_published>
       <domain>subdomain.domain.tld</domain>
       <adkim>r</adkim>
       <aspf>r</aspf>
       <p>reject</p>
       <sp>reject</sp>
       <pct>100</pct>
     </policy_published>
     <record>
       <row>
         <source_ip>123.456.78.90</source_ip>
         <count>1</count>
         <policy_evaluated>
           <disposition>quarantine</disposition>
           <dkim>fail</dkim>
           <spf>fail</spf>
           <reason>
             <type>forwarded</type>
             <comment>looks forwarded, downgrade to quarantine with
   phishing warning</comment>
           </reason>
         </policy_evaluated>
       </row>
       <identifiers>
         <header_from>subdomain.domain.tld</header_from>
       </identifiers>
       <auth_results>
         <dkim>
           <domain>subdomain.domain.tld</domain>
           <result>fail</result>
           <selector>default</selector>
         </dkim>
         <spf>
           <domain>subdomain.domain.tld</domain>
           <result>softfail</result>
         </spf>
       </auth_results>
     </record>
     <record>
       <row>
         <source_ip>123.456.789.0</source_ip>
         <count>1</count>
         <policy_evaluated>
           <disposition>quarantine</disposition>
           <dkim>fail</dkim>
           <spf>fail</spf>
           <reason>
             <type>forwarded</type>
             <comment>looks forwarded, downgrade to quarantine with
   phishing warning</comment>
           </reason>
         </policy_evaluated>
       </row>
       <identifiers>
         <header_from>subdomain.domain.tld</header_from>
       </identifiers>
       <auth_results>
         <dkim>
           <domain>subdomain.domain.tld</domain>
           <result>fail</result>
           <selector>default</selector>
         </dkim>
         <spf>
           <domain>some.random.domain.name</domain>
           <result>pass</result>
         </spf>
       </auth_results>
     </record>

   Thanks for your help!
   CK
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