What do the Spam Scoring settings mean?
As messages are processed by the system some tests are yes/no tests (virus infected / sending IP address black listed) and some are value tests. After a message has passed all the yes/no tests then the content of the message and the way it is put together is checked against 1000s of value tests. Each test has a value or weight and the message gets the sum total of all failed tests. It is this final total score that is compared against the Tag/Quarantine/Block thresholds to decide the fate of a particular message. We call this our three strikes and you’re out testing.