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Raimondo Fanale

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DSPAM - antispam software

Posted by Raimondo Fanale • Wednesday, August 16. 2006 • Category: Software per server, Spam

DSPAM is a scalable and open-source content-based spam filter designed for mailers and servers or MTA. My first impressions (in 2004-2005) was very good and by its proven results and client testimonials I have chosen to install to all my servers and on my customer's servers



There is a little list of DSPAM's features:

  • open source, GPL
  • only 726kb (the source to install)
  • filters between 99.5% and 99.95% of spam (on properly configured system)
  • very fast, even with another filter like an antivirus
  • probabilistic engine and auto-learning algorithms
  • it introduces algorithms like Concept Identification, Neural Networking, Message Inoculation , de-obfuscation, Bayesian Noise Reduction
  • written C for performances
  • supports following storage drivers: SQLite, Berkeley DB, MySQL, PostgreSQL, Oracle and a self made hash driver
  • supports MTA like Sendmail, Postfix, Qmail, Courier, ed Exim.

It works as a server or trought a library (libdspam) that can be incorporated directly into applications like mailer's filter plugins.

But :

  • the web UserInterface can't be easily localized in all languages
  • because it works at a server-level, can't be managed trought a webmail. Every developer must write a plugin for your server or use the SquirrelMail plugin ;-)
Finally: very usefull, very fast, but not  user-friendly

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