Forum Discussion
Carlos Gomez
Jun 14, 2017Brass Contributor
Create shared mailbox on Hybrid environment - directly on O365 or onpremises then migrate it to O365
Hi, What is the recommended way to create shared mailboxes for a hybrid environment? There are some issues if you create them directly to O365 - https://support.microsoft.com/en-us/help/3129334/u...
- Jun 14, 2017
Hi Carlos,
If you have an Hybrid, your autodiscover is pointing to your on-premises Exchange. If you create your Mailbox only in Cloud, your AD and Exchange does not have any propreties of that mailbox, that is the issue.
Kyle Natoli
Oct 31, 2017Copper Contributor
The method that works for me is:
1) create a user mailbox in OnPrem Exchange
2) move the user mailbox to office 365
3) Once move is completed, Convert to shared mailbox (either through EAC or EXO PS using set-mailbox -type shared cmd)
4) remove license as it is no longer needed for shared mailbox
5) Assign mailbox delegation to required users
This ensures the mailbox is known between both Exchange onprem and Exchange online realms and doesn't bypass the federation if it's created in the cloud originally. The only Exchange objects that should be recreated in the cloud for a hybrid deployment are DDGs since they can't sync through AAD Connect. Every other EX object should always be created in onprem realm and then synced to EXO via AAD Connect.
- Eric MoralesJul 31, 2018Copper Contributor
Hello None None,
I have a couple of question regarding your post. Your method for shared mailboxes in Hybrid environment.
- Can I just create the mailbox as shared from the beginning in on-prem exchange server?
- How do I create bulk shared mailboxes in the on-prem server?
- Can you clarify this, I researched that you need to import the .csv file into EMS, if that is the case, do you know of a way to create a .csv file template to import into EMS?
Please, let me know at your earliest convenience.
Thanks,
EM
- Kyle NatoliAug 07, 2018Copper Contributor
1. Yes, you can if you have a Exchange 2013 or Exchange 2016 server in your hybrid environment that can create mailboxes straight from the EAC GUI. When you choose new Mailbox, there is an option for Office 365 mailbox, and then choose mailbox type Shared.
You can also use the enable-remote mailbox cmdlet in EMS with the new updates to EX 2013 and 2016 so that it creates a remote shared mailbox right away in the cloud without changing Attributes in AD. refer to https://support.microsoft.com/en-us/help/4133605/cmdlets-to-create-modify-remote-shared-mailbox-in-on-premises-exchange
Exchange 2010 will require either performing the method i mentioned in my previous post or enabling a user remote mailbox from on-prem, changing to shared in EXO, then updating the attributes in AD so that it doesn't change back to a user mailbox. Refer to Draper's response above.
2. Your second question was answered by your third question. Any bulk creation of an Exchange object will require a CSV file fed into EMS or EXO powershell.
3, I don't have a CSV file on hand, but you can find one easily online. Performed a google search and found this. https://gallery.technet.microsoft.com/How-to-Bulk-create-6be6c82f
hope this helps.
- Balaji MAug 29, 2019Copper Contributor
I have CU21, In ECP i have option to create user, room and equipment mailbox but not shared mailbox
In Shell option is available.
How we can get shared mailbox option in ECP or GUI
- Mike FrattoMar 01, 2018Copper Contributor
Thank you that work perfectly