Hi Kurt, > On 18 Jul 2017, at 09:59, Kurt Andersen (b) <kb...@drkurt.com> wrote: > >> On Tue, Jul 18, 2017 at 10:02 AM, Alexey Melnikov >> <alexey.melni...@isode.com> wrote: >> I've started implementing ARC and have a few minor comments on the draft: >> >> 5.1.2.2. Computing the 'b' Tag Value for ARC-Message-Signature >> >> As with ARC-Seal and DKIM-Signature header fields, the order of >> header fields signed MUST be done in bottom-up order. >> >> Upon rereading this I am not sure this is very clear. Maybe give an example, >> especially if multiple instances of a particular header field are included. > > See section 5.1.1.3 of the document which specifies the way to build the > header list for hashing.
Maybe add a cross reference then. Maybe it is just lack of coffee, but "bottom-up" sounded confusing and the opposite of the DKIM order.
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