Migrating on prem disribution group to exchange online - Hybrid

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Occasional Contributor

 

* Hybrid setup (Exchange 2013 - Single Server)

* All users already migrated to EXO

* its time to migrate distribution groups (Almost 200) - Already synced using AAD

* At present IT is controlling distribution groups and we want the same way

 

I would like to know what is the best way to migrate distribution group to EXO.   Is there any latest script / method  ?  I have found few years old discussion but not very clear to me.  

 

Thanks in advance

       

4 Replies
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@SASK2381 Hi, since you have on-prem AD and are syncing using AD connect, you actually don't migrate your DLs. AD is the source of user data including users and groups, so you continue to manage them using AD users and computers, and Exchange admin center (on-prem). That includes mailbox management, creating mailboxes, manage DL membership etc.

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@CloudHal  Thanks for response,

 

yes that's true right now , but we want to get rid of on-prem exchange .  Do you think it will work fine when we turn off on-prem exchange server ?  and we just able to manage them from AD ?

 

 

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What you are suggesting is possible but unsupported. You can manage email attributes using AD users and computers, but it is not so easy for support, and user accounts won’t have all the correct email attributes. For example managing proxy addresses is prone to error.
The only way of retaining AD at the moment is to also retain exchange for management.
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@CloudHal  thanks,

 

so if I want to get rid of on-prem exchange , the only option is to recreate them all in EXO,  in that case what is the best method, script, best practice to follow ? 

Manually deletion and recreating is time consuming and also temporary disruptive as I have almost 200 Distributions group.