The order that the spamBlocker exception rules appear in the list is the order in which email messages are compared to the rules. The proxy policy compares messages to the first rule in the list and continues in sequence from top to bottom. When a message matches a rule, the Firebox performs the related action. It performs no other actions, even if the message matches another rule later in the list.
To change the order of rules, select the rule you want to move. Click Up or Down to move the selected rule up or down in the list.