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Home / Spam / Glossary
Blacklist
Synonyms: Black hole list, Realtime black list, RBL [Realtime Blocklist]
Used as one method of filtering spam, blacklists provide a list of known sources of unwanted e-mail. Traffic from listed IP addresses is simply blocked. Several public blacklists are available, one of the best known being the Mail Abuse Prevention System [MAPS].
The use of blacklists helps to force ISPs [Internet Service Providers] to monitor their own outgoing e-mail and so avoid the negative commercial effects of being ‘blacklisted’.
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