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Re: [ietf-dkim] Base issue: multiple linked signatures

2007-01-04 13:14:11
On Thu, 04 Jan 2007 14:23:06 -0000, Hallam-Baker, Phillip <pbaker(_at_)verisign(_dot_)com> wrote:

[mailto:ietf-dkim-bounces(_at_)mipassoc(_dot_)org] On Behalf Of Charles Lindsey

I just want to point out that similar arguments also apply to
the "MUST sign the From header" case.

I disagree, I can easily write a test vector for that MUST so it is emprically verifiable. Hence it can be made a MUST.

True. Perhaps I overstated my case. However, it still conflicts with RFC 2119, since no interoperabilty arises (the sky does not fall in) if you fail to sign the From. All that happens is that people might suppose it is not always a good idea (and they m,ay even turn out to be right in some cases). But you are not supposed to use "MUST" for that. "SHOULD" would be quite strong enough.

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