Mailing-list misconfiguration?

[Vincent DEFERT <20.100%defert.com@localhost>]

    Hi,
      
      I'm receiving DMARC reports such as the one below. The 199.233.217.200
        source_ip points at mail.netbsd.org.
        
        My understanding is that when NetBSD's mailing-list software
        forwards my posts to other subscribers, it keeps my email as
        sender address instead of replacing it with
        netbsd-users%netbsd.org@localhost.
        And because mail.netbsd.org is not listed in my SPF record (of
            course), those forwarded emails are considered as spam.
            
            Am I correct?
            
            Vincent
            
          <?xml version="1.0" encoding="UTF-8"
      ?>
      <feedback>
        <report_metadata>
          <org_name>emailsrvr.com</org_name>
          <email>dmarc_reports%emailsrvr.com@localhost</email>
         
<extra_contact_info>http://emailsrvr.com</extra_contact_info>
         
      <report_id>38087c37-56bb-4dc7-838c-b6c1697b1354</report_id>
          <date_range>
            <begin>1604707200</begin>
            <end>1604793600</end>
          </date_range>
        </report_metadata>
        <policy_published>
          <domain>defert.com</domain>
          <adkim>s</adkim>
          <aspf>s</aspf>
          <p>quarantine</p>
          <sp>reject</sp>
          <pct>100</pct>
        </policy_published>
        <record>
         <row>
           <source_ip>199.233.217.200</source_ip>
           <count>1</count>
           <policy_evaluated>
             <disposition>quarantine</disposition>
             <dkim>fail</dkim>
             <spf>fail</spf>
           </policy_evaluated>
         </row>
         <identifiers>
           <header_from>defert.com</header_from>
         </identifiers>
         <auth_results>
           <spf>
             <domain>netbsd.org</domain>
             <result>pass</result>
           </spf>
         </auth_results>
        </record>
        <record>
         <row>
           <source_ip>199.233.217.200</source_ip>
           <count>1</count>
           <policy_evaluated>
             <disposition>none</disposition>
             <dkim>pass</dkim>
             <spf>fail</spf>
           </policy_evaluated>
         </row>
         <identifiers>
           <header_from>defert.com</header_from>
         </identifiers>
         <auth_results>
           <spf>
             <domain>netbsd.org</domain>
             <result>pass</result>
           </spf>
           <dkim>
             <domain>defert.com</domain>
             <result>pass</result>
           </dkim>
         </auth_results>
        </record>
      </feedback>