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Brightmail Tries to ID Spam Sources

by Marianna Schmudlach / February 16, 2004 5:48 AM PST

New service tracks down IP addresses that send mostly junk mail.

Cara Garretson, Network World
Monday, February 16, 2004

With the deluge of unwanted e-mails that flow into corporations showing no signs of easing, antispam software maker Brightmail is offering a new service designed to identify IP addresses that send mostly junk mail.

Called the Brightmail Reputation Service, this new feature monitors hundreds of thousands of e-mail sources to determine how much mail sent from these addresses is legitimate and how much is spam, says Ken Schneider, chief technology officer of Brightmail. The company gathers information from user reports and from its Probe Network--a collection of decoy e-mail in-boxes designed to catch spam--to determine whether a given IP address sends valid or junk messages. There are about 300 million end users of Brightmail's software, the company says.

More: http://www.pcworld.com/news/article/0,aid,114794,tk,dn021604X,00.asp

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