Re: WG Review: Domain-based Message Authentication, Reporting & Conformance (dmarc)

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On Monday, July 14, 2014 10:31:23 Dave Crocker wrote:
> On 7/14/2014 9:42 AM, The IESG wrote:
> > A new IETF working group has been proposed in the Applications Area. The
> > IESG has not made any determination yet. The following draft charter was
> > submitted, and is provided for informational purposes only. Please send
> > your comments to the IESG mailing list (iesg at ietf.org) by 2014-07-24.
> 
> The first paragraph of a charter is circulated independently of the
> rest, such as when announcing the working group.
> 
> As such, it needs to serve as a kind of abstract.  This is why there is
> a requirement, specified in RFC 2418 (WG Guidelines & Procedures),
> "Description of working group:
> 
>      "The first
>       paragraph must give a brief summary of the problem area, basis,
>       goal(s) and approach(es) planned for the working group..
> 
> >  Charter:
> >    Domain-based Message Authentication, Reporting & Conformance (DMARC)
> >    uses existing mail authentication technologies (SPF and DKIM) to
> >    extend validation to the RFC5322.From field. DMARC uses DNS records
> >    to add policy-related requests for receivers and defines a feedback
> >    mechanism from receivers back to domain owners. This allows a domain
> >    owner to advertise that mail can safely receive differential
> >    handling, such as rejection, when the use of the domain name in the
> >    From field is not authenticated. Existing deployment of DMARC has
> >    demonstrated utility at internet scale, in dealing with significant
> >    email abuse, and has permitted simplifying some mail handling
> >    processes.
> >    
> >    The existing base specification is being submitted as an Independent
> >    Submission to become an Informational RFC.
> >    
> >    However, DMARC is problematic for mail that does not flow from
> >    operators having a relationship with the domain owner, directly to
> >    receivers operating the destination mailbox. Examples of such
> >    "indirect" flows are mailing lists, publish-to-friend functionality,
> >    mailbox forwarding (".forward"), and third-party services that send
> >    on behalf of clients. The working group will explore possible updates
> >    and extensions to the specifications in order to address limitations
> >    and/or add capabilities. It will also provide technical
> >    implementation guidance and review possible enhancements elsewhere in
> >    the mail handling sequence that could improve could DMARC
> >    compatibility.
> 
> The DMARC draft charter's first paragraph does not state any goals.
> This can be fixed by moving the last two sentences of the third
> paragraph, to the end of the first.
> 
> That is, end the first descriptive paragraph with:
> 
>   "The working group will explore possible updates
>   and extensions to the specifications in order to address limitations
>   and/or add capabilities. It will also provide technical
>   implementation guidance and review possible enhancements elsewhere in
>   the mail handling sequence that could improve could DMARC
>   compatibility.
> 
> and delete it from it's current position.
> 
> >    References
> >    ----------
> >    
> >    DMARC - http://dmarc.org
> >    SPF - RFC7208
> >    DKIM - RFC6376
> >    Internet Message Format - RFC5322
> >    OAR / Original Authentication Results -
> >       draft-kucherawy-original-authres
> >    Using DMARC -  draft-crocker-dmarc-bcp-03
> 
> This is missing two citations that I thought were supposed to be
> included, since they touch on indirect email flows:
> 
>    Delegating DKIM Signing Authority - draft-kucherawy-dkim-delegate-00
>    DKIM Third-Party Authorization Label - draft-otis-dkim-tpa-label-03

If we're adding references, I think RFC 7001,  Message Header Field for 
Indicating Message Authentication Status, should be included as well.  It's, I 
think a matter for the WG to decide if RFC 7001 provides enough or if an 
extension like OAR is needed.

Scott K





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