With 94% of email classified as junk (spam, phishing and virus-laden messages), allowing such distracting and dangerous traffic into your network can grind your business communications and organizational productivity to a halt. Removing this junk email at the gateway optimizes network efficiency, and enhances email and employee productivity. SonicWall Comprehensive Anti-Spam Service (CASS) offers small- to medium-sized businesses comprehensive protection from spam and viruses, with instant deployment over existing SonicWall firewalls. CASS speeds deployment, eases administration and reduces overhead by consolidating solutions, providing one-click anti-spam services, with advanced configuration in just ten minutes. Outperforming RBL filtering, CASS offers more than 98% effectiveness against spam, dropping more than 80% of spam at the gateway, while utilizing advanced anti-spam techniques like Adversarial Bayesian filtering on remaining email.