Spam Traffic Management

Spam traffic management aims to slow down connections spammers make to mail servers. This both ties up their resources, and discourages them from sending to that "tarpit" server.

• Tarpits Explained
• Tarpit Implementations

Related

• Greylisting
• Preventing Spam by User Control

Traffic Management and Tarpits Explained

Connection Management - www.mailchannels.com/technology/connection-management.html
Using Throttling and Traffic Shaping to Combat Botnet Spam - www.usenix.org/events/lisa07/tech/tech.html#simpson
Teergrubing FAQ - www.iks-jena.de/mitarb/lutz/usenet/teergrube.en.html
Resisting Spam Delivery by TCP Damping - www.ceas.cc/papers-2004/191.pdf
Tarpit - en.wikipedia.org/wiki/Tarpit_%28networking%29

Tarpit Implementations

Tarpitting with qmail-smtpd - www.palomine.net/qmail/tarpit.html - qmail
spamd – spam deferral daemon - www.openbsd.org/cgi-bin/man.cgi?query=spamd - OpenBSD
TarProxy - www.martiansoftware.com/tarproxy/ - Java
Turnaway - postmaster.gtcs.com/turnaway.nxdl - C
SpamCannibal TCP/IP tarpit - www.spamcannibal.org/ - Linux
dummy-smtpd - www.spamshield.org/#tools - Perl
Zombie SMTP - www.hart.co.jp/spam/fakesmtp-e.html - Unix
SMTP tar pit feature for Microsoft Windows Server 2003 - support.microsoft.com/kb/842851 - Exchange/Windows Server
MailChannels TrafficControl - www.mailchannels.com/ - Unix
Greypit — a sendmail milter - ian.blenke.com/projects/greypit/mail/spam/greylist/tarpit/sendmail/milter - Sendmail
LaBrea - sourceforge.net/projects/labrea/
Sticky Mail Server - www.codeplex.com/stickymailserver - Windows