PureMessage is a highly effective email filtering system that analyzes email messages at the network gateway. It protects organizations against spam and viruses and enforces corporate communication policies.
PureMessage self-adjusts its range of detection techniques as necessary to prevent protection failures. The software is automatically updated with the latest anti-virus definitions and spam rules created by Sophos analysts.
PureMessage contains several hundred spam tests that analyze individual characteristics of each message. Each of these tests has a numerical weight. When a message is analyzed by PureMessage, the weights from all the spam tests that matched the message are added up and converted to a spam score that expresses the message's "spam probability".
PureMessage handles incoming email as follows: