Commtouch Now Using IP Reputation

Increasing numbers of spam and virus control vendors are implementing an "IP reputation" layer for their email filtering offerings. The latest is Commtouch Software. In essence, an IP reputation service maintains a database of addresses on the Internet that are known to send good or bad content. It maintains lists of the IP addresses and address ranges used by, for example, spammers and by legitimate direct mailers.

IP reputation grew out of the idea of a blacklist, accessed over the domain name system (hence they're known as DNSBLs). DNSBLs gained the reputation of being badly run, often by anti-spam vigilantes who were unaccountable and provided their lists as something of a crusading hobby. To a varying degree, this reputation was justified. IP reputation vendors distance themselves from the DNSBL heritage by highlighting their professional approach and well-documented policies for listing and delisting. (DNSBLs are also known as real-time blacklists (RBLs) but this is claimed as a trademark by Kelkea/Trend Micro.)

Commtouch has added an IP reputation layer to its existing anti-spam toolkit, which includes its flagship recurrent pattern detection technology. This will allow it to compete against other OEM technology providers, such a Mailshell.

... Richi Jennings

One Comment

  1. Posted October 27, 2006 at 4:27 AM | Permalink

    To be honest, I always assumed “IP Reputation” was just a fancy way of saying “proprietary DNS blocklist” and making it sound like a new feature 😉

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