[anti-spam-wg] DKIM spoofing (was: RIPE 51 anti-spam WG minutes)

[Walter Ian Kaye <]

At 04:16p +0000 12/07/2005, Rodney Tillotson didst inscribe upon an 
electronic papyrus:

> C. Technical measures
>
> DKIM Domain Keys Identified Mail
> http://mipassoc.org/dkim/
>
> Patrik F��ltstr��m gave a presentation on DKIM status and technology.
> http://www.ripe.net/ripe/meetings/ripe-51/presentations/pdf/dkim.pdf
> Patrik F��ltstr��m: No, I think it is going to work!
> At Cisco they notice that about 10% of messages are signed.
> There are a number of DKIM-aware tools: Sun Mail, Yahoo!, Cisco,
> SpamAssassin.
I've been seeing faked domain key/SPF headers (what a surprise). Excerpt:

> Received: from natural-innovations.com ([220.112.86.252])
> X-Gmail-Received: 2atq6t6218l0215v27be90z95a641f3r8wqu8302y6
> Received-SPF: pass (go.com: domain of xlm@localhost 
> designates 220.112.86.252 as permitted sender
> List-ID: <germane.go.com>
> Precedence: bulk
> X-Mailer: PHP
> X-Accept-Language: en-us, en
> To: xlm@localhost
> Subject: Request.
I've also seen fake Habeas headers. What good are these things if 
they're just going to get spoofed anyway?