Change email address

Question

Change email address

Roger Roger 7,181

Hi All,

I have a booking mailbox, let's say its email address is ******@contoso.onmicrosoft.com. One of my users utilizes this booking mailbox and has scheduled numerous invites to external users. I have a requirement to change the booking mailbox's email address from ******@contoso.onmicrosoft.com to ******@contoso.com. Will there be any impact on the previously scheduled invites if I make this change?

Please guide me on how to change the booking mailbox email address from powershell, and let me know if it's possible to set ******@contoso.onmicrosoft.com as a secondary email address.

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Answer 1

Hi, @Roger Roger

When you change the primary email address of your booking mailbox, the previously scheduled invitation is usually still valid. These invitations are usually associated with the mailbox itself, rather than a specific email address. However, it is best to notify external users of this change to avoid any confusion.

In Exchange on-premises, you can use the following command in Power Shell to modify the primary email address of a mailbox.

Set-Mailbox -Identity "******@contoso.onmicrosoft.com" -PrimarySmtpAddress "******@contoso.com"

You can then set up the secondary email address using the following command.

Set-Mailbox -Identity "******@contoso.com" -EmailAddresses @{add="******@contoso.onmicrosoft.com"}

In Exchange Online, you can manage the email address in the EAC.

1.Select the mailbox you want to modify, and select "Manage email address types"

User's image

2.Select "Add email address type"

User's image

3.Enter the ******@contoso.com and check "Set as primary email address", click Save and the old email address will automatically become a secondary email address.

User's image

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Answer 2

When you change the email address, the previously schedule invites will not be affected because the mailbox is still same, only the email address changes.

Follow the PowerShell commands to change the email address-

1. Connect to Exchange Online Connect-ExchangeOnline

2. Add the new Primary email address Set-Mailbox -Identity ******@contoso.onmicrosoft.com -PrimarySmtpAddress @contoso.com -EmailAddresses @{add="@contoso.onmicrosoft.com"}

3. After this you can verify by running the command Get-Mailbox -Identity ******@contoso.com | Select-Object PrimarySmtpAddress, EmailAddresses

Let me know if you any query in above steps.

Answer 3

Roger Roger 7,181

I am getting below error

PS C:\windows\system32> Set-Mailbox -Identity ******@contoso.onmicrosoft.com -PrimarySmtpAddress ******@contoso.com

Set-Mailbox : A parameter cannot be found that matches parameter name 'PrimarySmtpAddress'.

At line:1 char:59

... ntity ******@contoso.onmicrosoft.com -PrimarySmtpAddress bm ...
- CategoryInfo : InvalidArgument: (:) [Set-Mailbox], ParameterBindingException
- FullyQualifiedErrorId : NamedParameterNotFound,Set-Mailbox

Anonymous

2024-09-18T05:15:12.9766667+00:00

Hi, @Roger Roger

The PrimarySmtpAddress parameter is currently only available for on-premises Exchange, and if you use this parameter in Exchange Online, the error is expected.

If you want to change the email address in Exchange Online, you can do so in the Exchange Admin Center, which can be found in the previous answer.

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Answer 4

Roger Roger 7,181

i can see the booking mailbox in M365 Admin center not Exchange Admin center. is this expected behaviour.

Anonymous

2024-09-18T06:18:49.01+00:00

Hi, @Roger Roger

As far as I know, Microsoft Bookings calendars are typically managed through the M365 Admin center, which is where many higher levels of management of users and resources are done. It may not appear in the Exchange Admin center by default because the Bookings calendar is considered a different type of resource mailbox dedicated to scheduling and managing appointments. However, Bookings uses shared mailboxes in Exchange to store customer, employee, service, and appointment details, so all Bookings data is stored in the Microsoft 365 platform and Exchange Online.

In addition, you need to make sure that there are no other specific settings or permission restrictions within your organization to organize your view of the mailbox.

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Answer 5

Roger Roger 7,181

using the below syntax i have changed the email address but still booking mailbox invites are going with ******@contoso.onmicrosoft.com. it has been 24 hours. it is possible to change upn from ******@contoso.onmicrosoft.com to ******@contoso.com. please guide me.

Set-Mailbox -Identity @contoso.onmicrosoft.com -EmailAddresses "SMTP:@contoso.com","smtp:******@contoso.onmicrosoft.com"

Anonymous

2024-09-19T07:34:54.1133333+00:00
Hi, @Roger Roger

It looks like you've updated the email address with the Set-Mailbox cmdlet, but the invitation to the scheduled email address is still sent from the old address.

This may be due to the UPN not being updated.

1.You can try using the command Set-Mailbox in combination with Set-MsolUserPrincipalName to change the UPN.

Set-Mailbox -Identity ******@contoso.onmicrosoft.com -UserPrincipalName ******@contoso.com

If you're using Azure AD

Set-MsolUserPrincipalName -UserPrincipalName ******@contoso.onmicrosoft.com -NewUserPrincipalName ******@contoso.com

You can refer to related cases Changing O365 Username using Powershell - Collaboration - Spiceworks Community

2.Check if the changes are successful

Get-Mailbox -Identity ******@contoso.com | Select-Object UserPrincipalName, PrimarySmtpAddress, EmailAddresses

3.Sometimes it helps to restart the service in question or reboot the client computer accessing the mail to clear any cached data.

Also make sure that the scheduled email address has been enabled to automatically reflect updates (or manual updates).

Finally, the time it takes for the settings to take effect is affected by the system configuration, although 24 hours is long enough.

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Anonymous

2024-09-23T08:37:19.2366667+00:00

Hi, @Roger Roger

Any updates so far? If you have solved your problem, could you share with us? Maybe it will help more people with similar problems. Don't forget to mark it as answer, this will be easy for other community members to find the useful one.
Anonymous

2024-09-26T09:56:08.6366667+00:00

Hi, @Roger Roger

Just checking in to see if above information was helpful.

If the issue has been resolved, please mark the helpful replies as answers.
Anonymous

2024-09-30T09:30:01.79+00:00

Hi, @Roger Roger

Just circling back to check to see how things are going on with this thread. Should you need more help on this, you can feel free to post back.

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Change email address

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