You may find it useful to modify your
content security policy for testing purposes to hold all processed messages,
even clean ones. This will allow you to determine how
If you are using the supplied starter policy, you can modify it to hold clean messages as follows:
When you have finished testing, remember to reverse these policy edits and re-apply the configuration.
Try sending test messages into and out of the system to confirm the mail routes are producing the results you were expecting. From the Message Center you can view the policy summary for each held message. This tells you the mail route the message matched, as well as which content rules the message triggered and which nodes in the message caused those rules to trigger. For more information on viewing the policy summary for a held message, see Analyze and manage held messages.