- FairUCE
FairUCE, a spam filter developed by
IBM , stands for ("Fair use of Unsolicited Commercial Email"). It is an early form ofChallenge-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 'sdomain name and theIP 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'swhitelist 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.External links
* [http://www.alphaworks.ibm.com/tech/fairuce FairUCE homepage] (As at
2008-03-31 , it has not been updated since2004-11-30 ).
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