Under certain circumstances, you may want to prevent Hosted Email Security from scanning certain types of messages that may pose security risks. For example, compressed files provide a number of special security concerns since they can harbor security risks or contain numerous compression layers. Scan exceptions are configured to instruct Hosted Email Security to take actions on these messages.
If an email message triggers the scan exception "Malformed messages", Hosted Email Security stops scanning and takes the corresponding actions.
If any other scan exception is triggered, Hosted Email Security takes the specified actions and will not stop scanning until encountering a terminal scan action. For details about terminal actions, see "Intercept" Actions.