Forum Discussion
Migrate Exchange Hybrid Server to other domain
Hi Jerry,
You have to Setup a new Installation of Exchange Server on Domain B.
After instalation of the new Exchange Setup, you have to Uninstall Exchange on Domain A and then Run the AD Connect Again to discover the new Exchange and after that changes you Have to setup a new Hybrid Configuration Wizard on Exchange on Domain B.
Goedemiddag Jerry. We have the same situation at a customer and just posted a question on this as well at https://techcommunity.microsoft.com/t5/Exchange/decommision-resource-forest-and-install-Exchange-2016-in-account/m-p/95766
Can you have a look and maybe have an answer on this? Thanks!
Status update,
Currently we have reduced our Exchange farm to a much smaller environment from 15 Exchange server to 2 exchange servers. One Hybrid and One Cashub.
We are now testing a couple of scenarios in our test lab. Currently we have a succesfull move but it takes a lot of scripting before everything works. For instance the MSexchangerecepientdetails needs to be copied over to the user in the new domain.
I will get into more details when we are further with testing
I have already send you a personal message. I don't know if it allowed but i have worked out this case on my personal blog. I am not sure if it is allowed to share this here. But you can finde the 2 project within the urls bellow.
https://jerrymeyer.nl/2017/10/20/office-365-migrating-azure-ad-connect-new-ad-domain/
https://jerrymeyer.nl/2017/10/23/migrate-exchange-hybrid-server-another-domain/
If you have any question please let me know. Also feedback on the blogposts are very welcome :)
Hi Jerry,
I am soon to face the same task..
So we have an on-prem server and all users are remote-mailbox users (according to it) so O365 online users and they are sync'd from domain A using AADSYNC currently.
We probably also do have a few local security groups, mail contacts and the like in on-prem environment.
The active directory domain, users have been synchronized using ADMT to domain B in preparation for domain migration (for the users) ..
So now I have to plan adding an on-prem exchange presence in Domain B also.. again to allow for management of certain attributes that Exchange online doesn't make easy..
So I'm looking for a fool proof/simple ! way to do this.. and would be keen to hear of any difficulties you had.
I do not have a test lab.. and so must tread carefully in this task..
any help/direction would be wonderful.
