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If there is any one product that can significantly change the face of modern security software as we know it, it would have to be the Barracuda firewall. 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.

In terms of features and even innovation, the Barracuda firewall is simply up there compared to other products in its class. It is able to determine the sender and the IP address of the e mail for instance. Since most e mail spammers tend to use only a few servers and e mail address at most, these are pretty easy to detect with the use of Barracuda firewall.

Unlike many other similar products on the market, the Barracuda firewall carefully looks through the e mail message header in order to determine if any signs of modification are detected. Many spammers have been known to try to defeat e mail servers by modifying message headers, which has traditionally been a weak spot in network security. The Barracuda firewall is not susceptible to such deceptive tactics, since most modifications to the e mail headers are generally considered as a spamming attempt.

The Barracuda firewall also carefully examines the content of every e mail that ends up in your system. Excessive use of certain terms that are considered to be characteristic of spam e mail will be monitored closely. If the e mail in question is considered spam, the appropriate action according to your user setting will be taken.

If you have already developed your own whitelist and blacklists of users, you will be glad to know that the Barracuda firewall can compare them against your own received e mail. As you can imagine, these features can make short work of sorting out your e mail into groups of trusted senders and banned senders.

Finally, Barracuda firewall also comes with a full set of virus protection utilities that offer a considerable amount of protection against viruses that may be stored in e mail attachments. Given all of these built in technologies, it appears that the Barracuda firewall offers a very comprehensive array of antispam detection and testing features.