Why does primaryEmailAdress stay same when account last name is changed?

Question

Why does primaryEmailAdress stay same when account last name is changed?

dzumret 1

When a person gets lastname changed. Primary SMTP adress stays same. This is only the case with the remote mailboxes.

Automatically update email addresses based on the email address policy is enabled on the account but the emails stay the same. Nothing gets updated under proxyAddresses attribute.

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Answer 1

Vasil Michev 119.7K MVP Volunteer Moderator

Does your email address policy include mail user/remote mailbox recipient types?

dzumret 1 Reputation point

2021-03-08T15:27:54.54+00:00

I think it does. Becouse when I remove the tick in the box for address policy and save. Then i check the box for emailaddresspolicy enabled and save. Then the new emailaddress is added.
dzumret 1 Reputation point

2021-03-08T15:30:22.737+00:00

I have checked and it says: Includes All recipient types

Answer 2

KyleXu-MSFT 26,396

@dzumret

I tested it in my lab, the Email Address Policy is created on the Exchange on-premises.

After changing the last name for one remote mailbox, I could see the Email address changed immediately from Exchange on-premises admin center(Old last name is "Ma").

Then I run command below on AAD Connect to force sync local AD with AAD:

Start-ADSyncSyncCycle -PolicyType Delta

After waiting for a while, I would see the new last name show in AAD, the primaryEmailAdress also changed:

So, Make sure the new last name is sync to AAD first, then refresh the Office 365 admin center and check again.

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dzumret 1 Reputation point

2021-03-10T08:38:43.483+00:00

Thank you KylX. It is exactly how we have set up our environment. AD SyncCycle is set to default 30min but the primary address still stays the same unfortunately after the name change. And the name change was weeks and days ago.

What helps is to frist disable emailaddresspolicy by running:
Set-Mailbox -Identity someusername -EmailAddressPolicyEnabled $false

And then to enabled it again with:
Set-Mailbox -Identity someusername -EmailAddressPolicyEnabled $true

Then address is updated on premise and afterwards synchronized to Office 365.

But that is only a workaround not a solution.

Can someone point to some troubleshooting site or blogpost about Exchange and name changes, would be very appreciated so we can continue and try to solve the problem.

Thanks in advance.
KyleXu-MSFT 26,396 Reputation points

2021-03-11T07:59:27.27+00:00

Try to raise this address policy to the highest level. You can also try to create a specialized email address policy for those remote mailboxes.
KyleXu-MSFT 26,396 Reputation points

2021-03-17T08:42:08.57+00:00

@dzumret
Any update about this thread now?
dzumret 1 Reputation point

2021-06-04T06:10:42.987+00:00

Hello again, sry for this loooong delay on answering. I will try to create new email address policy for remote mailboxes.
Since the issue is within the default policy and we have other policies that have higher level. Don't want to mess them up.
I will try to update as soon as possible and notify you how it went.

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Why does primaryEmailAdress stay same when account last name is changed?

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