
Information Week reports that Cloudmark launched software <A HREF="http://www.informationweek.com/story/showArticle.jhtml?articleID=14800373">designed to differentiate trashy email</A> sent by spammers from bulk email sent by legitimate businesses. SpamNet is installed as an add-on to Microsoft Outlook 2000 or later version of the email client. The spam blocker takes a 24-character representation of the email, and sends it to the Cloudmark server, which checks whether the sender has a high probability of being a spammer.