Vorras Classifier

Overview

Vorras Classifier is a server-side email anti-spam tool that relies on machine learning technology to distinguish between spam and legitimate email messages. Decisions on incoming email are based on a database residing on the email server that is updated on a regular basis. Email that is classified as spam is not deleted at the server; special headers are introduced instead, which can be used by any email client to store it in a separate “junk” folder or delete it depending on the user's preferences.

A unique feature of Vorras Classifier is that email classification is tailored to each user individually. This is accomplished by keeping track of the characteristics of each user's email and allowing users to give feedback that Vorras Classifier uses for learning purposes. User feedback does not depend on which email client or operating system the user is using, thus allowing users to use the platform of their choice.

Figure 1 illustrates the email tagging process. Note that mailbox storage and the POP server need not be located on the same machine as the SMTP server and Vorras Classifier.

Features:

• Can greatly reduce false positives and false negatives.
• It learns from your own mail, so it's tailored to your unique e-mail characteristics.
• Easy installation - works on any UNIX system.
• Can be used in combination with Vorras Mailer
• User can select whether he wants messages, tagged or moved to a "junk" folder.
• Mistakes can be fed to the filter to correct it.
• The filter can be configured to learn dynamically from its own actions and the user's feedback, or the user can feed initial samples of good and spam email.

Is there a feature you would like to see in future versions of Vorras Classifier, not shown here? let us know by posting a message on our forum.

System requirements:

• MySQL installed on the same machine as the machine where the SMTP server is located. This is required for storing user specific spam features that allow Vorras Classifier to tailor its filterring to each user.

• Python 2.2.2 or higher installed on the same machine as the STMP server.

• Web server such as apache installed. This can reside on the same machine as the SMTP server or on a different server. This is necessary to allow users to send feedback to the filter, therefore the machine that has the web server should be able to connect to the MySQL database (locally or remotely).

Supported Platforms

Version History

• Vorras Classifier 1.0: December 12, 2003. Initial version.

License