SPEWS is a database which several IT Guys, and corporations have assembled and use to block spam. This private long list is currently available for the general public to look at and use for email blocking.
Most junk blocking services operate after the fact. There is a timeout between spam sources starting up their shop, sending bad email to millions, and getting blocked in the database with these systems. spews identifies known bad actors and spam sources, it stops them when they start, occasionally right before they begin sending bad mail.
SPEWS also discovered that a number of the many popular spam lists and blocking systems are becoming bogged down due to an too many calls, this lessens their effectiveness. SPEWS doesn't operate A request or vote based record of spam, entries in the record come from the knowledge and expertise of the men and women who set up and use the SPEWS archive.
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