On Sun 30/Jun/2013 15:21:29 +0200 Michael Deutschmann wrote:
"EDSP" would only pay attention to signatures where the "d=" matches
the right hand side of the RFC821 MAIL FROM:.
This means that someone can publish the strictest possible EDSP
without causing mailing list false positives. Mailing lists take
ownership of the MAIL FROM:, hence only an EDSP set by the list itself
will apply, and the original poster's EDSP will be correctly ignored.
Just like in SPF.
Of course, since the MAIL FROM: is usually not visible without pressing a
"show all headers" button, this would be more about leaving a clearer
audit trail than actually foiling phishes.
Well, not really. MAIL FROM: is only visible after delivery, so to
avoid dangling signatures one should store its value in some other
header field or... in the i= tag. Heck, is that the semantics that the
OP was talking about?
_______________________________________________
NOTE WELL: This list operates according to
http://mipassoc.org/dkim/ietf-list-rules.html