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 _______________________________________________ NOTE WELL: This list operates according to http://mipassoc.org/dkim/ietf-list-rules.html
