You might want to look at another project: ASSP http://assp.sourceforge.net/
This is a spam filter that blocks at the SMTP level, essentially catching the spammer in the act. Since it immediately drops the connection it also prevents the spammer from sending several emails at once. It even includes a tarpit function in case the spammer tries to reconnect and send additional spam. How cool is that? Gordon Michelle Konzack wrote: > Hello, > > I am running a 3.5 MBit SDSL from <http://www.nerim.net/> and have a > @home Mailserver which is currently (since 2007-12-17) hit by daily > several 100.000 spams (2-5 times 30-120 minutes) from over 2000 > different IP's. > > My mailserver is rejecing thios shit nearly perfect but the server > has a System- and CPU-load of nearly 100% which make the IMAP server > unusable and since the sevrer does automated mailprocessing (40.000 > per day) I hit a real problem. > > Now, since most senders (over 90%) have wrong reverse DNS I like to > know, whether there is a possibility to block such connections on > the router with iptables and helpers? > > Thanks, Greetings and nice Day > Michelle Konzack > Systemadministrator > Tamay Dogan Network > Debian GNU/Linux Consultant > > > > > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------- > Check out the new SourceForge.net Marketplace. > It's the best place to buy or sell services for > just about anything Open Source. > http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace > > > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------ > leaf-user mailing list: leaf-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/leaf-user > Support Request -- http://leaf-project.org/ -- Gordon Bos Q-RY Solutions Martinus Nijhofflaan 2 2624 ES Delft The Netherlands Tel: +31 (0)15 256 4035 Fax: +31 (0)15 256 4074 Q-RY Solutions is distributeur van Pervasive Software en ConnecTUX software, en draagt zorg voor consultancy, levering, ondersteuning, installatie en training. ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace ------------------------------------------------------------------------ leaf-user mailing list: leaf-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/leaf-user Support Request -- http://leaf-project.org/
