Open Source and free under the GNU General Public License (GPL)

Quarantines for each mailbox enable users to manage their own spam folders without having to track down an administrator

Personal Passlists enable users to designate specific email addresses as "trusted" without having to bother the IT staff

Image-based filtering scans images within emails to stop this new pervasive spamming technique

POP, IMAP & SMTP support

Reports give a comprehensive view of the spam on your network, including  the source of the spam, ham-to-spam ratios, trending and stats per user

Spam Blocker Lite protects the network with advanced spam filtering techniques to weed out spam at the network gateway -- before it reaches the mailserver or desktops. Using the latest technologies, Spam Blocker transparently scans for spam, marks messages and intercepts emails. It requires no alteration of your network’s mail configuration and is constantly updated to provide continuous protection as spammers find new ways to evade filters.

Spam is the bane of small businesses’ existence. It wastes employee time, renders inboxes unmangeable and can even infect desktops with viruses and spyware. The impact that spam has on productivity is astounding. According to a recent study, the cost of spam messages to U.S. companies -- in terms of productivity and the equipment, software and manpower to combat it -- was upwards of $10 billion in 2004.

The key is to stop spam before it stops you.

Untangle Forums: Spam Blocker Lite
Untangle Wiki: Spam Blocker Lite

Spam Blocker is built upon technology from the SpamAssassin project.