[mail-vet-discuss] What is the A-R header really for?

Charles Lindsey chl at clerew.man.ac.uk
Wed Oct 17 07:02:42 PDT 2007


On Wed, 17 Oct 2007 10:27:23 +0100, Eliot Lear <lear at cisco.com> wrote:

> Ok, well then we don't agree.  The information simply cannot be trusted
> unless it's signed, and if it's signed there will be agents that can't
> verify it.  I can tell you that I would encourage administrators to
> strip it at the border because of the risk of misinterpretation and
> spoofing.  This having been said, the wording used in Section 3.1 is
> close.  I would make the first two SHOULD NOTs  MUST NOTs.

-1

It would be stretching RFC2119 beyond its breaking point to use MUST NOT  
for those two.

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