Test Types

PureMessage uses a variety of methods to detect spam. These methods are embedded in the test definition of anti-spam rules. PureMessage detection methods are included in one of the following feature groups.

PureMessage also uses "meta" tests to check the result of two or more tests. For example, a meta test might be configured to be true if two other rules are also true. You cannot create custom meta tests; however, you can alter the score of existing tests. On the Anti-Spam Rules page in the PureMessage Manager, the test definition component of a meta test is prefixed by the word Meta.

Regular expression tests, message evaluation tests, meta tests and URI tests are enabled by default, as are DNS checks. tests generated from adaptive classification training must be manually configured and enabled.

Related concepts
Regular Expression Primer
Managing Anti-Spam Rules
Related information
dnsbl.conf