We noticed recently that the AppInsight for Exchange monitor is displaying Users Mailboxes that aren't on the DB we are looking. For example, we are looking at serverA which has Mail DB DB05 active on it. You look at that DB and you see a list of users. You hover over the users and it also shows they are on DB05, but when you look the user up against Exchange in PowerShell, the users mailboxes are actually residing on DB07. DB07 is also mounted on ServerA. Has anyone else noticed this? I checked one of the other 4 Exchange servers in our environment, and that one appears to be displaying correctly.