In article 
<mn2pr11mb43510f27a700c9644f9baed4f7...@mn2pr11mb4351.namprd11.prod.outlook.com>
 you write:
>Based on a discussion from last year
>(https://mailarchive.ietf.org/arch/msg/dmarc/YoHhhaAfwRjbd8aq4fiV6xU1ifw/), 
>there was a
>request/ticket to clarify the language in the document.
>
>>From https://tools.ietf.org/html/rfc7489#section-7.2:
>
> *  Data for each Domain Owner's subdomain separately from mail from
>      the sender's Organizational Domain, even if there is no explicit
>      subdomain policy

That would be a change to the XML report schema. It'd change as I show
below to force a separate row for each header_from.

That's a somewhat incompatible change, so I'd want to be sure we agree
that it's a real problem that's worth changing the report format. I
suppose if we do we should encourage report consumers to be prepared
for old and new formats.

R's,
John


   <xs:complexType name="IdentifierType">
     <xs:all>
       <!-- The envelope recipient domain. -->
       <xs:element name="envelope_to" type="xs:string"
                   minOccurs="0"/>
       <!-- The RFC5321.MailFrom domain. -->
       <xs:element name="envelope_from" type="xs:string"
                   minOccurs="1"/>
Old:
       <!-- The RFC5322.From domain. -->
       <xs:element name="header_from" type="xs:string"
                   minOccurs="1"/>

New:
       <!-- The RFC5322.From domain. -->
       <xs:element name="header_from" type="xs:string"/>

     </xs:all>
   </xs:complexType>

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