FairUCE

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FairUCE, a spam filter developed by IBM, stands for ("Fair use of Unsolicited Commercial Email"). It is an early form of Challenge-response spam filtering and shares its drawbacks.

Technically, well-known domain, IP address, whitelist blacklist database should be maintained for FairUCE to take action on the email. FairUCE tries to find a relationship connecting the envelope sender's domain name and the IP address of the client delivering the mail, using a series of cached DNS look-ups. If a relationship can be found, FairUCE checks the recipient's whitelist and blacklist, as well as the domain's reputation, to determine whether to accept, reject, challenge on reputation, or present the user with a set of whitelist/blacklist options.

[edit] External links

• FairUCE homepage (As at 2008-03-31, it has not been updated since 2004-11-30).

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