Security checking done by the bridge

When the bridge puts or gets a message, the following authorities are used:

Getting a message from the bridge queue
No security checks are performed.
Putting an exception, or COA report message
Uses the authority of the user ID in the UserIdentifier field of the MQMD structure.
Putting a reply message
Uses the authority of the user ID in the UserIdentifier field of the MQMD structure of the original message
Putting a message to the dead-letter queue
No security checks are performed.
Notes:
  1. If you change the WebSphere MQ class profiles, you must issue the WebSphere MQ REFRESH SECURITY(*) command to activate the changes.
  2. If you change the authority of a user, you must issue the MQSC RVERIFY SECURITY command to activate the change.