eFa Project is dedicated to creating an effective and efficient solution for spam filtering with their email filter appliance. With the goal of simplifying the process, they have combined various open-source projects into one convenient package. By leveraging the power of established software, eFa offers a reliable and user-friendly solution for combatting spam. The project revolves around a community-driven approach, aiming to build the best possible spam filter product by utilizing existing open-source software.

The eFa appliance is built on a strong foundation, using CentOS as the operating system, Postfix as the mail transport agent, and MailWatch as the web interface. To ensure comprehensive spam detection, eFa incorporates powerful tools such as MailScanner, SpamAssassin, ClamAV, and various spam detection networks. Additionally, it employs content filtering, grey listing, and image recognition with ImageCeberus.

All scripts and programs developed by the eFa Project are licensed under GPL, while other software included may have different licenses. With their commitment to providing efficient spam filtering, eFa Project continues to release regular updates, demonstrating their dedication to improvement and innovation.