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DSPAM - Community Driven Anti-Spam Filter

DSPAM is community driven continuation of the original DSPAM antispam filter invented by Jonathan Zdziarski. DSPAM is a scalable and open-source content-based spam filter designed for multi-user enterprise systems. On a properly configured system, many users experience results between 99.5% - 99.95%, or one error for every 200 to 2000 messages. DSPAM supports many different MTAs and can also be deployed as a stand-alone SMTP appliance. For developers, the DSPAM core engine (libdspam) can be easily incorporated directly into applications for drop-in filtering


Project Road Map

View the Project Road Map to see a timeline of where we are going from here.

How to Get Involved

This project is currently looking for anyone interested in becoming involved. You don't need to be a coder to do so!

  • If you have any interest in DSPAM then join up on a one of the mailing lists.
  • If you aren't a coder, but have ideas how to improve the project then use the mailing lists or create a new feature request.
  • If you found a bug, then list it on the bug tracker.
  • We are also looking for translators, documentation editors, how-to guides and testing on any platform

We'd be happy to have you join!

Where to find help

Source code and Building

Release Downloads and Packages

Releases of DSPAM and packages available in tar.gz/rpm/deb will be made available in the Downloads Area

Source code and checking out

The public source repository for DSPAM can be accessed here. To gain write access please sign up on the devel mailing list and contact a project admin. More information can be found on the developing page. Note: the URLs for read and write access are different


In order to build from sources, you will need autoconf, automake, and libtool installed. The versions specifically used in development are listed in configure.ac and Makefile.am. Once you have downloaded the source tree, do the following:

cd dspam
./configure [options]
make && make install

If you have any problems, please sign up on the mailinglists

To see all configure options

./configure --help


Basic documentation for installation and configuring DSPAM can be found in the source tarball or inside your package. Be sure to look at README, RELEASE.NOTES, UPGRADING and the /doc folder.

Extended documentation, examples set-ups and best practices can be found on this page. The mailing lists also hold a vast wealth of knowledge.

Docs From Original Wiki

You can see the original wiki here

New Docs

Other Anti-spam Filters and interesting things to read

Open Source Projects

Commercial Products

Example Configurations

Plugins and Integrations

Extending DSPAM With Other Techniques and Good Spam Fighting Practices

3rd Party Sources of Info

Access the 3rd Party Resources page.

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