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spamBlocker is a fully integrated security subscription for WatchGuard network security appliances. It's the best in the industry at distinguishing legitimate communication from spam outbreaks in real time, blocking close to 100% of unwanted emails and the viruses they carry. Using industry-leading RPD technology to monitor the Internet for distinct patterns in global email traffic, it stops spam regardless of the language, content, or format of the message - even image-based spam. Easy to deploy and continually, automatically updated, spamBlocker gives IT administrators the flexibility to decide how messages will be processed and what domains are allowed on trusted whitelists.