How does PureMessage identify spam?
PureMessage contains over a thousand different spam tests that analyze individual characteristics of each e-mail message. Each test has a numerical weight assigned to it.When e-mail is analyzed by PureMessage, the weights from all of the spam tests that matched the message are added and converted to a “spam score” that expresses the message’s “spam probability”. Any message that has a spam probability of 70% or more is blocked by PureMessage and placed in the Quarantine.