SpamAssassin in a Box incl. Windows service.
Spamassassin in a box is a powerful and reliable spam filter for windows. Beside the famous email filter spamassassin, it also contains a windows system service, making spamassassin controllable via the windows service control manager. A fully preconfigured spamassassin is already included, as well as several enhancements (regarding stability, memory usage, signal handling, and more) for running the spam filter on a windows system.
The service monitors spamassassin s daemon spamd and updates the anti-spam rules automatically. Furthermore it contains a lot of additional individual configuration options. Spamassassin in a box is suitable for use in windows-based server systems, but is also supported by any other common windows system.
Spamassassin in a box uses a scoring system to declare the likelihood of a mail being spam. The spam score can than be used by a continuative program, usually the mta (message transfer agent), to decide how to handle the mail. To obtain a complete anti-spam solution, you have to connect spamassassin in a box to your mta.
Many well-known mtas support a corresponding connection or can be extended by this sort of link (eg. Microsoft exchange or hmailserver).