Spam Exchange Server is quickly becoming a huge and complex problem for organizations utilizing Microsoft Exchange Server. Unlike viruses, spam mail does not have a clear and cut signature. The amount of daily Spam Exchange Server jobs is reaching critical mass. When queried, organizations of all sizes admit that email security has become their single most important challenge. The need to secure the organization against spam, fraud attacks, as well as email born viruses, has become critical and unacceptable. But Spam is not only annoying, it may also contain viruses and other malware like spyware etc. that can destroy user's data, compromise privacy or consume system resources.

Organizations are increasingly targeted to defeat this growing security threat, as Information Technology departments struggle to protect systems, employees and customers from spam gangs. The primary defense against Spam Exchange Server, by organizations of all sizes, is the deployment of third-party anti-spam technology as perimeter security, surrounding the vulnerable Spam Exchange Server mail server. Due primarily to the overwhelming popularity of Exchange Server, hackers, virus writers and spammers have teamed up to find and exploit the ever-increasing number of security vulnerabilities found in Microsoft's popular mail server. Majority of organizations and individuals as well want to stop exchange spam. The market can offer thousands of anti-spam solutions but the task is to find the best equipped one. According to many anti-spam experts, the primary test is to examine the anti-spam product's fundamental filtering paradigm.

There are many ways to fight and finally to stop Exchange Spam. The most widely used method is the Bayesian filtering technology. Bayesian filtering is widely acknowledged by leading experts and publications as the best way to catch spam. It's multilingual and international. 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. Just see the statistics and think it over. These statistics were derived from a number of different reputable sources including: Google, Brightmail, Jupiter Research, eMarketer, Gartner, MailShell, Harris Interactive, and Ferris Research. For the year 2003 daily spam emails sent have reached the figure of 12.4 billion, 40% of email en bloc considered spam, daily Spam received per person 6, annual Spam received per person 2,200, users who purchased from Spam email 8%, wasted corporate time per Spam email 4-5 seconds. Of course Spam statistics are quickly outdated. Well, the good news is, that the global Spam volume seems to be decreasing due better filters and other Anti-Spam measures, but the bad news is that there is still plenty of Spam delivered each second.

Forecast is not encouraging. By 2007 Exchange Spam may show 64% growth.