Milter-greylist

egcrosser <egcrosser@...> wrote:

> Sorry, I feel that I am too chatty today.  I promice to stop after
> this message ;-)

Don't refrain talking about your ideas, that would lower the chances of
a good thing getting out of the discussion. :) 
 
> I've got another idea how to measure rating of the peer, this time
> completely within existing infrastructure.  The idea is this:
> 
> if a greylisted submission was *not* retried by the peer within, say,
> 12 hours, the peer is likely no good!  Good guys always retry after 4xx.
> 
> One caveat: the peer might have resent the message via anotehr MX.  So
> reception of the same (sender, recipient) from one of our MXes should
> amnesty the original sender address.
> 
> How does it sound?

I see a big flaw: Immagine you get a flood of message from
<big@...>. You get amnisty whereas you shouldn't have.

The problem is about recognizing the message. Could the message-Id be
used for that? Is there a guarantee of its presence? How unique is it?
Any SMTP guru in the room? 

-- 
Emmanuel Dreyfus
Il y a 10 sortes de personnes dans le monde: ceux qui comprennent 
le binaire et ceux qui ne le comprennent pas.
manu@...