[In, Out] Provides an authentication level that is passed to each message, which is sent through this bus adapter. There are four authentication levels:
0: No authentication is used. This is the default value.
1: Always. Message Queuing at run-time signs the message based on the authentication registry key being sent. (See Microsoft's documentation on the Message Queuing technology.)
2: MSMQ 1.0. The message is signed using an MSMQ 1.0 signature.
3: MSMQ 2.0. The message is signed using an MSMQ 2.0 signature. Signing requires that MSMQ 2.0 is installed on all involved systems.