Forum Discussion
Migrating On-Prem Distribution Groups to Exchange Online in Hybrid Mode
Hello TonyRedmond,
Sorry, your answer is quite old now but I have a question regarding the situation.
I'm in a similar situation with the customer here:
- Made a hybrid deployment to migrate from Exchange 2010 to Office 365;
- Have AAD Connect (and ADFS)
- Migrated almost all users (and shared mailboxes, etc.)
- The end goal is to shut down the Ex10 server since I've told uninstalling it is a terrible idea. We'll be managing things like SMTP Addresses from the AD Attribute Editor.
Now about the DGs: We've sync'ed them all with AADC. We can see them in o365 AC and ExO but not manage them as expected.
If I would like to manage them there, can I simply remove the DG OU from AADC Sync?
EDIT: Thinking about it, I've realized doing what I've described above should change the ID of the DG since it isn't a migrated object but a created one. Therefore, I suppose people who use Autocomplete (meaning everybody ^^) will be screwed.
Users will have to get the DG from the Online GAL, correct?
Thanks in advance for your answer
If you have a bunch of DLs on-premises, you will need to:
1. Recreate them in the cloud.
2. Delete them on-premises.
If you don't do this, you'll end up having to keep an on-premises server to manage the objects that remain there. It is easy enough to script the recreation and deletion with PowerShell. You'll need to have a session connected to both on-premises and the cloud when you run it.
- Hi Tony,
How do we create a dynamic group? we don't want to update manually.
Setup: Hybid Mode| EXO | Cloud Sync |Azure P2 TonyRedmond Is this still valid? We are in hybrid scenario for last few year and we have almost moved all mailbox and DL are dir sync. is there any better option available to move DL to EXO only?
Bhavesh Shah Nothing much has changed in the last few years.
- still the same?
So in order to completely migrate to 365 there is no way to move the on prem distro's 365 exchange with out creating new distro's in cloud. In other words the distro sync'd by AD will go away once you decomission the on prem exchange?
As of now if i create a distro in the cloud external users cannot reach that email group. ( my MX records still point on Prem ) I have a second domain in my 365 exchange which does have the mx records point to the 365 exchange and they are working fine so i am assuming that when i change my mx records to point to 365 those " in cloud" distro's will work just fine.
Just want to ensure that i'm understanding the reading in this article correct before proceeding. I've got just about every mailbox created and will be left with room mail boxes and distro's to finish this migration. My goal is to decomission the on prem exchange server and just leave a mail relay .You should recreate the DLs in the cloud and then remove the on-premises equivalent. People often script this removal so that the new cloud DL receives the old email address used for the on-prem DL. You could do it like this:
Create the new DL in the cloud. Set the new DL to be hidden from address lists so no one can see it. Give it a temporary email address.
Add the members to the cloud DL.
On-premises, update the old DL to give it a new email address and hide it from address lists.
After the on-premises change synchronizes to the cloud, update the new DL to give it the original email address and unhide it from address lists. Clients will now see the new DL and begin using it.
After a week or so, when you are sure that everything works as expected, you can delete the old DL from on-premises AD.
Email addresses always need to be resolvable before delivery can occur. Once you switch the MX records, the cloud DLs can be used.
- Can we create Dynamic Group base on the rule?
