Hardware firewall and other cool stuff
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. Even the most devious e mail servers won't be able to pull a fast one on the Barracuda firewall, as it can detect any changes in the message headers of e mails. Upon the detection of any such modification on the e mail headers, the Barracuda firewall will then almost always automatically consider these e mails as spam. Barracuda firewall also looks into the content of any received e mail for any of the usual signs of spam. If there are certain spam terms that show up frequently, the Barracuda firewall will weigh the probabilities of such e mail being spam.