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SpamHalter is a daemon for the Mercury/32 server that provides centralized SPAM protection for all local e-mail accounts. Its features are : Integrated Bayesian filter - no external server needed; Native WIN32 code - external script interpreters like PERL is not needed; Fast - SQLite3 database back end serves as a common database for all accounts; Robust - designed for high traffic business servers hosting many accounts; Adaptable - The Bayesian filter is a learning filter. You can teach the filter what is SPAM and what is not SPAM by simply forwarding a message to a local e-mail address example: firstname.lastname@example.org, email@example.com; Around the clock protection - SpamHalter runs 24×7 mode and there is stopping the daemon/database for recalculations; Accurate - detects more then 99% of SPAM. Probability of badly marked message as SPAM is only 0.01%! This is equal to, or better than, many expensive commercial products.