RecoverExchange
From Tranzman Documentation
The following method has been tested with the versions of Exchange 2007,2010,2013 & 2016 for recovering the Database Files and getting the server back up and running.
Step 1
Restore all EDB files to a temporary location on your Exchange Server.
Step 2
Open a Command Line windows, navigate to the Bin folder within the Exchange install location and launch the tool "ESEUTIL.EXE" followed by the /p switch. Without this step, the file won’t be able to be mounted.
i.e. C:\Program Files\Exchange Server\Bin>eseutil.exe /p D:\Temp\Recovered_Database.edb