Re: [dmarc-ietf] I-D Action: draft-ietf-dmarc-dmarcbis-06.txt

Before we picked 5, we looked and that's sufficient to capture all the 
boundaries.  It's not a problem.  This was discussed on the list, I don't 
recall when.

Scott K

On Tuesday, March 22, 2022 9:55:56 PM EDT Douglas Foster wrote:
> Suppose a FROM address domain has the lower-bound of 5 segments, and that a
> verified DKIM signature exists using a child domain somewhere below that,
> perhaps with 7 segments.
> 
> Are the names automatically considered to be aligned, without a tree walk,
> because a private registry boundary will not occur below level 5?  Or
> should a scope-limited tree walk be performed between the child domain and
> the FROM domain to be sure that no boundary exists?
> 
> Doug
> 
> On Mon, Mar 21, 2022 at 4:50 PM <internet-drafts@ietf.org> wrote:
> > A New Internet-Draft is available from the on-line Internet-Drafts
> > directories.
> > This draft is a work item of the Domain-based Message Authentication,
> > Reporting & Conformance WG of the IETF.
> > 
> >         Title           : Domain-based Message Authentication, Reporting,
> > 
> > and Conformance (DMARC)
> > 
> >         Authors         : Todd M. Herr
> >         
> >                           John Levine
> >         
> >         Filename        : draft-ietf-dmarc-dmarcbis-06.txt
> >         Pages           : 62
> >         Date            : 2022-03-21
> > 
> > Abstract:
> >    This document describes the Domain-based Message Authentication,
> >    Reporting, and Conformance (DMARC) protocol.
> >    
> >    DMARC permits the owner of an email author's domain name to enable
> >    verification of the domain's use, to indicate the Domain Owner's or
> >    Public Suffix Operator's message handling preference regarding failed
> >    verification, and to request reports about use of the domain name.
> >    Mail receiving organizations can use this information when evaluating
> >    handling choices for incoming mail.
> >    
> >    This document obsoletes RFC 7489.
> > 
> > The IETF datatracker status page for this draft is:
> > https://datatracker.ietf.org/doc/draft-ietf-dmarc-dmarcbis/
> > 
> > There is also an HTML version available at:
> > https://www.ietf.org/archive/id/draft-ietf-dmarc-dmarcbis-06.html
> > 
> > A diff from the previous version is available at:
> > https://www.ietf.org/rfcdiff?url2=draft-ietf-dmarc-dmarcbis-06
> > 
> > Internet-Drafts are also available by rsync at rsync.ietf.org:
> > :internet-drafts
> > 
> > _______________________________________________
> > dmarc mailing list
> > dmarc@ietf.org
> > https://www.ietf.org/mailman/listinfo/dmarc