Making a change in our environment and adding a Hybrid server. We installed a new CAS and Transport but did not install the Mailbox Role. We installed an Exchange 2010 SP1 and upgraded to SP3 Rollup 8. We now need to add the mailbox roll to the hybrid server. The SP3 upgrade obviously doesn't allow us to install the mailbox role. Tried using the Exchange 2010 with SP1 and that does not seem to work. Presents with an error.
Anyone have any ideas on how to add this to role to our server.