Ideal for small- to medium-sized businesses, Sonic WALL Email Security appliances are easy-to-install & extremely effective at stopping all e-mail threats at the SMTP gateway. This powerful solution protects organizations against threats including spam, phishing, viruses, Denial-of-Service & Directory Harvest Attacks, & compromised Zombie machines. These appliances also provide robust outbound e-mail management for policy & regulatory compliance. Based on a hardened Sonic WALL OS, these plug-&-play appliances install in less than an hour to securely protect your e-mail.