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With a system of different techniques that effectively identifies spam e mail, the Barracuda firewall gives you the option to discard spam e mail automatically, or place it into a holding area for later review and assessment. And the best part about all of this is that virtually all of the detection and elimination is done before the rogue e mails manage to reach your server, greatly reducing the possibility of spam e mails getting into your inbox. At the core of the Barracuda firewall is some very innovative technology that effectively determines whether certain e mails are spam or not. Both the sender of the e mail as well as the IP address in which it originates are analyzed, greatly increasing the chances of successful detection. Since there are certain senders and e mail servers that are known sources of spam e mail, this action of Barracuda firewall considerably reduces the risk of such e mail getting through.