We are journaling all mail. In the journal mailbox, we can see that Test-Mailflow is generating a message every two to four minutes. These messages have the following characteristics:
From: SystemMailbox{hex GUID pointing to our test mailbox server}
To: SystemMailbox{hex GUID pointing to our test mailbox server}
Subject "Test-Mailflow <some changing hex data here>"
Body: This is a test message from Test-Mailflow.
We also see the corresponding "Delivered" response messages going back.
Is this normal behavior? I can not find any documentation on the Test-Mailflow cmdlet that explains how or why it might run continuously. How do we stop this?
This was first noticed after updating Exchange 2007 SP1 to Rollup Update 7, but may or may not be related. We have three Windows 2008 servers in our test environment, with roles assigned as CAS, Hub, and CAS+MBX. This is happening on the test servers but not on our production servers, which are running the same software/hardware platforms as test.
Thanks for any suggestions or documentation you can provide.