Re: [Asrg] where the message originated (was: DKIM role?) (SM)

["Chris Lewis" <clewis at nortel.com>]

Ian Eiloart wrote:

> Maybe not so distant:
> <http://mipassoc.org/pipermail/ietf-dkim/2008q1/009039.html>
> 
> This is a plea from Dave Crocker (author of rfc822) to take a Thunderbird 
> extension that checks spf and dk, and add support for dkim.

I remember that and the plea.

The plugin didn't do SPF.  It couldn't do SPF, because it didn't have
access to either the MAIL FROM or HELO/EHLO.  It did something similar
to SPF (From:).

Even to get it to do From: "properly" required intimate knowledge of
your mail server architecture.

You could make it do SPF properly if you hacked your MTAs to add various
headers showing details about the perimeter connection (HELO, IP, rDNS,
MAIL FROM).

We do insert such info, but it obviously wasn't going to be worthwhile
hacking the plugin to recognize our additional headers.

The DK stuff didn't work at all AFAIK.

It was an experiment.  As an experiment, I believe it died.
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