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Open Source for the Enterprise by Gautam Guliani, Dan Woods

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Content Scanners

Antispam and antivirus are the two popular solutions in the content scanner area. Most are available on the server side; a few antispam and antivirus solutions are available on the client side as well. ClamWin, for instance, is a free antivirus checker that is available as an Outlook plug-in, and SpamBayes is an Outlook plug-in for spam control.

Most email clients in the open source arena are being designed and developed with antispam solutions built in. For example, Thunderbird has a naïve Bayes classifier for identifying spam that works well.

Antispam and antivirus software can be used independently if an enterprise has an email server solution already in place.

Antispam software integrates with either email servers or email clients to provide an effective means to block spam. For enterprise use, antispam software that works on the server side is recommended, as it is easier to manage and deploy.

Most open source antispam software tends to be immature, since blocking spam became necessary only in the last few years. However, the open source community has risen to the challenge of spam and has begun to provide software that is more effective in rescuing a user’s mailbox from the brink of disaster. Various methodologies of spam detection are currently being tested, including Bayesian filtering and collaborative filtering. The best antispam control software uses a combination of these features.

Antivirus Software

We define antivirus software as software that integrates ...

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