--On 24 September 2010 20:10:15 -0400 "John R. Levine"
<johnl(_at_)iecc(_dot_)com>
wrote:
It may be tiny, but users will not tolerate the total destruction of
mailing list traffic, which is the inevitable result of any ADSP use at
both ends which is sufficent to block actual forgeries (without using
whitelists).
Good point. So it's two things, lists should sign outgoing mail, and
discard any incoming mail with dkim=discardable.
No, they should reject the email at SMTP time. The email is NOT discardable
when it arrives at the MLM. Rejection at SMTP time does no harm, and gives
the sender an opportunity to fix the problem.
--
Ian Eiloart
IT Services, University of Sussex
01273-873148 x3148
For new support requests, see http://www.sussex.ac.uk/its/help/
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