Evochallenge is a straightforward software implemented in Perl that provides a challenge/response mail filter for Linux-based Evolution.
The concept is pretty straightforward - Evochallenge maintains a whitelist of approved email senders, and any incoming mail from someone who is not on that list gets redirected to a holding area. From there, the sender receives a challenge that only a real person can answer. If they pass the challenge, they are added to the whitelist permanently, and their future emails get delivered without delay.
One great thing about Evochallenge is that it is completely free and easy to install. Simply download the necessary files from the link provided and follow the instructions in the README file. The software has been tested on both Fedora Core and Ubuntu, so you can be sure it will work with your Linux system.
In the latest release, the installation process has been further streamlined to make it even easier to get started with Evochallenge. If you want a simple yet effective way to filter out spam and other unwanted junk mail, then Evochallenge is definitely worth a try.
Version 0.6: N/A