INFO: MSMQ Queue Manager Can Only Read from Queues on Same CN

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This behavior is by design. Opening a remote queue for receive access and reading messages from that queue are operations that require a direct session between the two computers. By definition, computers on different connected networks use different protocols and therefore, cannot establish a direct session with each other making this operation impossible.

In the "Microsoft Exchange Administrator's Guide," the definition of a connected network is

   A collection of computers where any two computers can
   communicate directly.
				

Important design note: Because MSMQ keys on the CN definition to distinguish between computers that cannot communicate directly, as opposed to computers that are temporarily offline, you must ensure that the CN definitions properly reflect the computers' abilities to connect to each other. Computers should not be placed in different CNs when they share the same protocol and are on the same subnet. Doing this will lead to results that may vary, based on the network and MSMQ routing server configuration.