Anne Bennett writes:

 > ** A tiny rant **
 > 
 > Necessary as this flexibility is if this document is to be
 > finished any time soon,

That's not why the flexibility is there, though.  The point of the
flexibility is that *this* RFC is being published to document what is
already "out there", based on the original non-IETF spec.  Clarifying
ambiguity only helps if we're pretty sure that in fact there aren't
any implementations based on an alternative interpretation.  If we're
not sure enough, we're exposing you to additional risk.

This is not to say that your technical points aren't well-taken.  But
the sooner we put *this one* to bed, the sooner we can get to work on
a normative RFC, and *picking* interpretations of existing ambiguity
that make it easier to configure the mail system and still enable
filtering of malicious mail.  Maybe even fixing unambiguous problems
in the current spec (although propagating changes to deliberately
chosen specifications to implementations is always a difficult task).

 > it causes problems for a person trying to create SPF and DMARC
 > records in a way that will not cause more problems than it solves!

No, since this RFC is informational, it simply fails to help where it
is ambiguous.  Any actual problems already exist "out there" -- and
there probably aren't going to be a lot of new ones because the DMARC
consortium claims that 80% of mail is already protected by DMARC.

If you stay away from SPF "-all" and use DMARC "p=none", I don't see
that there's much risk.

Steve

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