On Oct 26, 2010, at 1:49 AM, Hector Santos wrote:
I will not pretend to know (nor really care) what it will take to get
over this documentation dilemma but I will provide my comments here:
Murray S. Kucherawy wrote:
8.14 Malformed Inputs
DKIM allows additional header fields to be added to a
signed message without breaking the signature.
DKIM does not "allow" additional header fields.
Yes, it does. Section 5.4 of 4871 goes into quite a lot of detail about that,
and explains explicitly that you should list a header n+1 times if there are n
copies of it already if you don't want to allow more headers to be added, or
not if you do.
It's also quite clear about the need to sign user-visible fields.
All we're doing in this thread is pulling those two points together, and adding
a dash of observed MUA behaviour w.r.t. messages with multiple Subject headers.
Cheers,
Steve
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