Forum Discussion

curious7's avatar
curious7
Copper Contributor
May 18, 2020

How to decommission on-premises exchange servers and move completely to O365

We are currently using Exchange server 2013 in a hybrid setup with centralised mailflow through our on-premises servers. All our mailboxes are in O365. Following outbound connectors exist in O365:-...
office 365
curious7's avatar
curious7
Copper Contributor
Jun 15, 2020

@PeterRising @Nuno Silva 

Thanks Peter and Nuno.

thanks ...we might move the internal apps to O365 smtp relay to allow redundancy (as a single exchange server will not have redundancy)

But keep 1 server for mailbox management purposes.
Also, does this single exchange server (that we need to keep on-prem) need to have the CAS and mailbox server roles....or we can install the console only on this server for mailbox mgmt purposes only?

I am trying to see if MTA can be removed from the one server that needs to be left there.

PeterRising's avatar
PeterRising
MVP
Jun 15, 2020

curious7 

 

You will need to install the mailbox role.  You can't install Exchange 2016 without it.  Exchange 2016 consolidates roles from previous versions into only two roles which are Mailbox and Edge Transport.

  • curious7's avatar
    curious7
    Copper Contributor
    Jun 16, 2020

    PeterRising 

    At the moment we will be keeping 1 exchange 2013 server (may upgrade later to 2016 and license it using HCW as per your advise). So I guess I will need both CAS and mailbox roles on it?

    So is there no way to get rid of MTA on it?

Resources