GateWall Antispam features message processing rules. A rule generally contains one or more conditions with the AND/OR logic and actions that will be applied to a message if the conditions are met. Rules are processed top-down in the list. GateWall Antispam scans the entire list of rules for each message. It also supports non-sequential processing through applying two actions: "Cancel processing" and "Redirect action to rule." The first action ignores all subsequent rules and the second allows switching directly to a specified rule. Redirection is only allowed to rules located below in the list.