John Levine wrote:

>> But whatever, we may need a straw poll followed by a clarification RFC,
>> to settle once and for all whether Levine or Thomas is canon.
> 
> Mike's version is what the RFC says.  My version is the way that way
> too many people will misunderstand it, no matter what it actually
> says.
> 
> You've illustrated my point very well.  Thanks!

So can you help clarify your RFC 5617 work?

I honestly feel most people who decide to support it are going to 
follow what its says, just like David MacQuigg posted here today:

     http://www.imc.org/ietf-smtp/mail-archive/msg05781.html

So they will follow it verbatim.

RFC 5617 section 4.2.1.  Record Syntax writes:

   all          All mail from the domain is signed with an Author
                Domain Signature.

   discardable  All mail from the domain is signed with an
                Author Domain Signature.  Furthermore, if a
                message arrives without a valid Author Domain
                Signature due to modification in transit,
                submission via a path without access to a
                signing key, or any other reason, the domain
                encourages the recipient(s) to discard it.

However, once  implementators do follow the above, I think you are 
saying, it will be problem for 3rd party signers?

B.4.  Third-Party Senders

    Another common use case is for a third party to enter into an
    agreement whereby that third party will send bulk or other mail on
    behalf of a designated Author or Author Domain, using that domain
    in the [RFC5322] From: or other headers.  Due to the many and
    varied complexities of such agreements, third-party signing is not
    addressed this specification.

This this mean, if I read you and thomas right, DKIM=ALL means 3rd 
party signers are possible without valid 1st signatures?

CHAIRS: I believe this are honest WG questions.

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