Re: [exim] Testing what ports are open on the sending host.

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Autor: Mark Hynes
Datum:  
To: exim-users
Betreff: Re: [exim] Testing what ports are open on the sending host.
On Mar 06, Wakko Warner wrote:
> Marc Perkel wrote:
> > It is my theory that hosts who send spam have different ports open than
> > hosts who send ham and I'm not suggesting doing a port spam on ever
> > connevtion but if a few choice ports were tested and the results fed
> > into bayes then I think it would work as a white rule that statistically
> > if the sending host is running spam assassin that they probably aren't a
> > spammer.
>
> Wonderful, now spammers are going to start running spam assassin.


Some of the 'better' spammers already will do:

http://www.e-filtrate.com/salesletter2.html

-- 
  Mark Hynes               mark.hynes@??? 
    Service Developer        http://www.uk.easynet.net/
      Easynet Ltd