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Mailshell Anti-Spam Description |
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For each message, Mailshell Anti-Spam applies checks of its four spam detection engines:
SpamBulk Engine: Is the message or similar messages sent in bulk?
SpamRepute Engine: Do most people want the message?
SpamContent Engine: Will most people consider the message offensive?
SpamTricks Engine: Is the message formatted or sent to bypass anti-spam rules or to be economical for spammers?
For every message, the four engines check over a thousand rules and several locally cached databases. Mailshell Anti-Spam also creates a fingerprint ID for every e-mail message and compares it to existing fingerprints in its databases. Customers can opt to receive scheduled or real-time rules updates. The results of all of the engines are combined using SpamScore, a proprietary Bayesian statistical formula, into one final spam probability score.
Since spam constantly evolves, the Mailshell SpamLabs continuously collects and analyzes millions of new spam and legitimate messages and user feedback to tune the rules and databases and adjust the weighting of existing rules. |
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