With fraudulent, inappropriate and offensive emails being delivered in vast quantities to businesses every day, anti-spam software is a vital component of your network security strategy. Spam wastes network users’ time and network resources, and can also be dangerous. GFI MailEssentials offers anti-spam for Exchange server and other email servers and eliminates the need to install and update anti-spam software on each desktop.

Bayesian filtering is widely acknowledged by leading experts and publications as the best way to catch spam. A Bayesian filter uses a mathematical approach based on known spam and ham (valid email). This gives it a tremendous advantage over other spam solutions that just check for keywords or rely on downloading signatures of known spam. GFI’s Bayesian filter uses an advanced mathematical formula and a dataset which is ‘custom-created’ for your installation: The spam data is continuously updated by GFI and is automatically downloaded by GFI MailEssentials, whereas the ham data is automatically collected from your own outbound mail. This means that the Bayesian filter is constantly learning new spam tricks, and spammers cannot circumvent the dataset used. This results in a 98+% spam detection rate, after the required two-week learning period. In short, Bayesian filtering has the following advantages: