In process of installing exchange 2010 in a exchange 2003 environment. The goal is to move all the mailboxes over to exchange 2010 and then setup an exchange hybrid setup and start moving them into Office 365.
After squashing numerous install errors, I have exchange 2010 installed with SP3 and the latest rollup (16 I believe).
The initial install errored out on the mailbox role a couple of times, and the default mailbox it creates dismounted and I cannot mount it (or delete it). I ran the Get-Mailbox -Database "Mailbox Database Name" -arbitration command, and I'm seeing 2 system mailboxes and one federated email box. I have already deleted the discovery mailbox using the exchange shell.
It looks like the install never created the first mailbox database. If I go to the database path location, there is no folder corresponding to that database (or .edb file).
I have a new mailbox database created on the same exchange 2010 server, and I need to know if I absolutely need to move/recreate those systems/federated mailboxes and if so how would I do that?