[Mimedefang] sendmail spf milter plugin for sendmail 8.13.0
David F. Skoll
dfs at roaringpenguin.com
Wed Aug 18 08:39:53 EDT 2004
On Tue, 17 Aug 2004, Jeff Rife wrote:
> > http://www.sendmail.net/dk-milter/
> Oh, yuck. Sorry for the long rant, but...
[Long rant deleted]
Furthermore, DomainKeys is trivially defeated with a replay attack.
Send yourself the spam through the signing server. Now you have a signed
spam that you can re-mail far and wide. Of course, you can't mutate it,
which might increase the effectiveness of DCC and the like, but it still
means you can't *really* trust a properly-signed message.
--
David.
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