[91655] in North American Network Operators' Group
Re: ISP wants to stop outgoing web based spam
daemon@ATHENA.MIT.EDU (Michael Nicks)
Wed Aug 9 17:03:54 2006
Date: Wed, 09 Aug 2006 16:02:12 -0500
From: Michael Nicks <mtnicks@kanren.net>
To: Hank Nussbacher <hank@efes.iucc.ac.il>
Cc: nanog@merit.edu
In-Reply-To: <5.1.0.14.2.20060809132643.05586c90@efes.iucc.ac.il>
Errors-To: owner-nanog@merit.edu
I've had a a situation in the past that required this same application.
I ended up using amavisd-new with custom views for incoming and outgoing
mail. For spam originating from inside, it was dropped completely, for
spam originating from the outside, subject was rewritten.
Hope this helps.
-Michael
--
Michael Nicks
Network Engineer
KanREN
e: mtnicks@kanren.net
o: +1-785-856-9800 x221
m: +1-913-378-6516
Hank Nussbacher wrote:
>
> Back in 2002 I asked if anyone had a solution to block or rate limit
> outgoing web based spam. Nothing came about from that thread. I have an
> ISP that *wants* to stop the outgoing spam on an automatic basis and be
> a good netizen. I would have hoped that 4 years later there would be
> some technical solution from some hungry startup. Perhaps I have missed
> it. What I have found so far is:
>
> Detecting Outgoing Spam and Mail Bombing
> http://www.brettglass.com/spam/paper.html
> SMTP based mitigation - thing on HTTP/HTTPS
>
> Stopping Outgoing Spam
> http://research.microsoft.com/~joshuago/outgoingspam-final-submit.pdf
> Research paper - nothing practical
>
> Throttling Outgoing SPAM for Webmail Services
> http://www.ceas.cc/papers-2005/164.pdf
> Research paper - nothing practical
>
> ISPs look inward to stop spam - Network World
> http://www.networkworld.com/news/2004/071204carrispspam.html
> Bottom line - no solution
>
> So I am trying once again. Hopefully someone has some magic dust
> this time around.
>
> Thanks,
> Hank Nussbacher
> http://www.interall.co.il
>
