Over the past several years, we have received feedback from all sorts of customers on how the Hybrid Configuration Wizard can be improved. One highly requested piece of feedback has been focused arou...
Updated Jul 01, 2019
Version 2.0
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What specific functionality is added and what changes are made to the on-premise and cloud (Office 365) environments when you run the wizard with Minimal Hybrid Configuration (on Exchange 2010 SP3)? I looked for information on this, but couldn't find much.
I would like to get this setup for purposes of migrating on-prem mailboxes to Office 365, however I don't want to affect the inbound and outbound mailflow for the Office 365, or the on-prem environments. I don't care if internal email is routed between on-prem and cloud environments, but I want external mail destined for Office 365 to route to it and external mail destined to Exchange server to route to it. I want to make the least production-affecting changes as possible.
Currently, Office 365 tenant has one domain name and Exchange 2010 has another domain name. My goal is to add the hybrid configuration, add the on-prem domain name to Office 365, migrate the mailboxes (about 50) and remove the hybrid configuration. Does this sound reasonable with the Minimal Hybrid Configuration, or is it a much more involved process and should not be used for simple migrations? What is the process to "uninstall" the hybrid configuration from both environments? Thanks!
- You will need to have at least one domain that is added to both EXO and Exchange on-premises, that is called a "Hybrid Domain" and that needs to be in place.
Running the HCW in minimal configuration mode will not change the way your mail is routed since there are no connectors created.
We do not publish all of the changes that we do with the HCW, but essentially we add/modify accepted domains, remote domains, Email Address Policies, Web Services Virtual Directories, and tenant settings like DirSync enablement and Tenant Hydration.
We log all cmdlets we run in the HCW log so you can review the changes we have made there.
Not knowing all the detail of the scenario I cannot say for sure, but it sounds like a good candidate for doing the minimal Hybrid configuration. If you want the steps to remove hybrid please consult this document: https://technet.microsoft.com/en-us/library/dn931280(v=exchg.150).aspx