In Adobe Campaign Classic, control typology rules are used to enforce specific constraints on the delivery process, including exclusion criteria. To ensure that emails are not sent to recipients with specific domains, a control typology rule is the appropriate mechanism. Control rules can filter out email addresses based on domain names, preventing the system from including these domains in any campaign deliveries.
By configuring a control typology rule to exclude unwanted domains, the developer ensures that all email campaigns adhere to this rule, effectively preventing emails from being sent to any recipients with those specific domains. Pressure and filtering typology rules are not suited for this purpose, as pressure rules limit the number of messages sent, and filtering rules focus more on segmentation within the audience rather than delivery constraints.