North American Network Operators Group
Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Re: ISP wants to stop outgoing web based spam

  • From: Michael Nicks
  • Date: Wed Aug 09 17:02:37 2006

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: [email protected]
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