Hello, when I run Test-Mailflow, cmdlet try to use SysteMailbox located in dismounted database and execution fails: Test-Mailflow : Database is dismounted. At line:1 char:14 + Test-Mailflow <<<< -Identity <identity> -debug -verbose | fl This database must stay dismounted. Maybe, this cmdlet can use other SytemMailbox? Thanks in advance!

How many databases in the server? If the server is only with one DB which is dismounted then change Identity to another server. Thanks. Vishal Ramnani MCITP - Exchange 2007, MCSE Messaging, MCTS - Win 2008 Config

There are 3 databases in the server. Seems that Test-Mailflow always trying to use SysteMailbox from the first database (in alphabetical order). But on this server the first one is dismounted. So I can't run Test-Mailflow against this server.

Hi,If the database dismount,then I think mail cannot be sent from/to this mailbox. The comdlt is to diagnose whether mail can be successfully sent from and delivered to the System Mailbox mailbox on a computer that has the Mailbox server role installed.Please try to use following cmdlt:Test-Mailflow Mailbox1 -TargetEmailAddress john@contoso.comNote: it shows how to send a test message from the server Mailbox1 to the e-mail address john@contoso.comBesides,I'd like to know what cmdlt that you have run? Please post here.Regards,Xiu