Introduction to Innovative Mail Filtering with AXIGEN

1. The problem with electronic mail today Email is not what it was supposed to be. Its inventors have not foreseen the dan¬gers associated with this new form of communication. Means of protection were added later on, but do little to protect people’s mailboxes. As a result, most of the mail traffic these days is unwanted: spam, malware, phishing. How can we use the AXIGEN Mail Server and existing free anti-spam, antivirus and anti-phishing software and technologies so that the result is more than the sum of the parts? 2. Traditional filtering in AXIGEN From its very beginnings, AXIGEN has integrated open-source filters such as SpamAssassin and ClamAV and has used the fastest way to process mails through them by interfacing with their daemons directly. But this usage scenario had a major downside: mail messa¬ges were scanned in the queue, after having been accepted by the mail server. As a result, “Spam” folders had the tendency to grow indefinitely and waste space in the server...