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GlennMaxwell-2309 avatar image
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GlennMaxwell-2309 asked LucasLiu-MSFT commented

Change Alias

Hi All

I am using exchange hybrid environment, currently we are using exchange 2010 and exchange 2016, we are yet to decommission exchange 2010. In Exchange 2010 admin console we can the tab of alias. and alias take the primary SMTP email address. I am trying to change the primary SMTP address in exchange 2016 for a user but i am not able to change it since it is taking the alias which is set in exchange 2010, how do i change the alias from exchange 2016 without making change in exchange 2010.

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LucasLiu-MSFT answered LucasLiu-MSFT commented

Hi @GlennMaxwell-2309 ,
Do you finally want to modify the prmiary smtp address?
What do you mean when the Alias of the mailbox in Exchange 2016 is set in Exchange 2010?

1.According to my test, in a coexistence environment, if you change the Ailas of the mailbox in Exchange 2016.Then you will also see the Alias change of the mailbox in the admin console in Exchange 2010. Because even in two different Admin centers, the mailbox is the same object, so all changes will be displayed.

2.If you want to change the primary smtp address and not change the alias, you could following the steps:
1)Unclick the "Automatically update email addresses based on the email address policy applied to this recipient" for the mailboxes in Exchange admin center.
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2)Run the following command to change the primary smtp address for user mailbox. Then we could see that the primary smtp address has been changed but the alias not.

 Set-Mailbox -Identity <> -PrimarySmtpAddress <>

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Hi @GlennMaxwell-2309 ,
I am writing here to confirm with you how thing going now? If the above suggestion helps, please click “Accept as answer” to mark helpful reply as an answer.Your action would be helpful to other users who encounter the same issue and read this thread.
Thanks for your understanding.



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Hi @GlennMaxwell-2309 ,
I am writing here to confirm with you how thing going now?



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