Re: [dmarc-ietf] Versioning and XML namespaces in aggregate reports (#33, #70)

Matthäus Wander <mail@wander.science> Mon, 10 May 2021 15:50 UTC

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Date: Mon, 10 May 2021 17:50:42 +0200
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Subject: Re: [dmarc-ietf] Versioning and XML namespaces in aggregate reports (#33, #70)
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John Levine wrote on 2021-05-10 17:21:
> It appears that Matthäus Wander <mail@wander.science> said:
>> 1) #33 suggests to add a versioned XML namespace declaration in the root
>> <feedback> element.
>> https://trac.ietf.org/trac/dmarc/ticket/33
>>
>> I support the use of the namespace declaration. 
> 
> 
>> 4) How does the report generator know which format version the consumer
>> supports?
> 
> It doesn't.  If we change the schema, a lot of report parsers will break.  What actual
> real world problem does this change solve?

The schema is broken already. See:
https://trac.ietf.org/trac/dmarc/ticket/44
https://trac.ietf.org/trac/dmarc/ticket/45
https://www.uriports.com/blog/dmarc-reports-ietf-rfc-compliance/

The point is to fix the schema.

> I haven't seen a lot of ill-formed reports.

You obviously haven't tried XSD validation.

Regards,
Matt