Change the primary smtp address

Question

Hi All

i am using exchange 2016 hybrid environment, i have a shared mailbox lets say shared1@Company portal .com, i want to change the primary smtp address of this mailbox to shared2@Company portal .com and add additional alias(current email) as seconday i.e shared1@Company portal .com, i am unable to change the primary smtp address in exchange online and from exchange onprem i dont see the shared mailbox. experts guide me how to change the Primary address and add secondary address to this shared mailbox.

Answer 1

@Rising Flight

Disable email address policy on this mailbox:

Set-RemoteMailbox Shared1 -EmailAddressPolicyEnabled $false  

Change it to another email address:

Set-RemoteMailbox Shared1 -PrimarySmtpAddress Shared1@contoso.com  

Remove the email address that you want:

 Set-RemoteMailbox Shared1 -EmailAddresses @{Remove="Shared2@contoso.com"}  

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Answer 2

Here is it:

Set-RemoteMailbox Shared1 -EmailAddresses @{Add="smtp:Shared2@contoso.com"}
Set-RemoteMailbox Shared1 -EmailAddressPolicyEnabled $false
Set-RemoteMailbox Shared1 -PrimarySmtpAddress Shared2@contoso.com

Answer 3

@Rising Flight

i am unable to change the primary smtp address in exchange online and from exchange onprem i dont see the shared mailbox.

How this shared mailbox created?

If you cannot see this shared mailbox on Exchange on-premises, I think it is created on Exchange online. You could manage it from Exchange online admin center directly:

What do you mean about unable to change the primary smtp address in Exchange onine?

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Answer 4

is it not possible to change using remote mailbox syntax from onprem to change the primary smtp. please help me with the syntax

Answer 5

The syntax works perfect.

Now i can see in Exchange online below email addresses.

SMTP:shared2@Company portal .com
smtp:shared1@Company portal .com
smtp:shared1@Company portal .mail.onmicrosoft.com
smtp:shared1@Company portal .onmicrosoft.com

Now if i need to remove smtp:shared1@Company portal .com how do i remove.
Also how i edit shared1@Company portal .mail.onmicrosoft.com & shared1@Company portal .onmicrosoft.com to shared2@Company portal .mail.onmicrosoft.com shared2@Company portal .onmicrosoft.com