[91721] in North American Network Operators' Group
Re: ISP wants to stop outgoing web based spam
daemon@ATHENA.MIT.EDU (Ken Simpson)
Thu Aug 10 13:52:54 2006
Date: Thu, 10 Aug 2006 10:50:23 -0700
From: Ken Simpson <ksimpson@mailchannels.com>
To: Michael Nicks <mtnicks@kanren.net>
Cc: Hank Nussbacher <hank@efes.iucc.ac.il>, nanog@merit.edu
Reply-To: Ken Simpson <ksimpson@mailchannels.com>
In-Reply-To: <44DA4D54.10202@kanren.net>
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.
Can you elaborate on the situation off-list? It seems to me that
stopping outbound webmail spam is something that would not be
profitable for an ISP. I am wondering what the ISP's motivation is to
solve this problem.
Regards,
Ken
>
> 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
> >
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