Hi All
The question is: If after adding Exch 2016 and moving all roles from Exch 2013 can I leave some databases in Exch 2013 (15.0) format? I want to skip to move obsolete mailboxes to new database (15,1)
So if I decommission all Exch 2013 servers from the environment and retain only with Exch 2016 servers will some mailboxes left in Exch 2013 format (15.0) still be accessible solely by Exch 2016 and the clients?
Or to rephrase: Do I HAVE TO move all mailboxes to new format database BEFORE decommissioning Exch 2013 servers?
Greg