On Tue, 26 Apr 2011 13:22:15 +0100, Alessandro Vesely <ves...@tana.it> wrote:
> I guess Message-ID is among those "structural, not semantic" fields. > I concur. However, we miss a field that says an MTA is _knowingly_ > breaking whatever signatures may be present. The Message-ID gets copied into the References of replies. I can imagine a situation where a scammer changed the Message-ID in order to make a message appear in the wrong thread (most MUAs try to display messages in threads, and do it in a sufficiently similar manner that such a scam might work). The same might even be true of Content-Type (though the scammer would have to be pretty smart to dream up a viable mechanism). But, sadly, scammers ARE smart :-( . -- Charles H. Lindsey ---------At Home, doing my own thing------------------------ Tel: +44 161 436 6131 Web: http://www.cs.man.ac.uk/~chl Email: c...@clerew.man.ac.uk Snail: 5 Clerewood Ave, CHEADLE, SK8 3JU, U.K. PGP: 2C15F1A9 Fingerprint: 73 6D C2 51 93 A0 01 E7 65 E8 64 7E 14 A4 AB A5 _______________________________________________ NOTE WELL: This list operates according to http://mipassoc.org/dkim/ietf-list-rules.html