2 users in AAD with same mail address

Edin Cajo 1 Reputation point
2022-12-02T11:46:35.153+00:00

Good afternoon,

I have a question. In AAD I have user name.lastname@keyman with mail box and adm user adm.lastname@keyman .onmicrosoft.com without mail box and does not need it. Question is , can booth users have same mail address?
User1= John Smith, john.smith@xxxzzz.trade
User2= John Smith Cloud adm, cadm.smith@xxxzzz.onmicrosoft.com

The question is , is it possible that John Smith Cloud adm has john.smith@xxxzzz.trade address or not?

Thank you in advance for your help

AAD

Microsoft Entra ID
Microsoft Entra ID
A Microsoft Entra identity service that provides identity management and access control capabilities. Replaces Azure Active Directory.
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  1. Michael Durkan 12,156 Reputation points MVP
    2022-12-02T12:56:27.19+00:00

    Hi

    no, you need to have dedicated and authentic email addresses for each of your users, this will not be allowed.

    Hope this helps,

    Thanks

    Michael Durkan

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  2. Ravi Kanth Koppala 3,231 Reputation points Microsoft Employee
    2022-12-20T03:13:07.28+00:00

    @Edin Cajo ,
    In Azure Active Directory (AAD), two users can't have the same email address. Each user must have a unique email address within the directory.

    It is possible, however, for the user "John Smith Cloud adm" to have an email address that is an alias of the email address of the user "John Smith". An alias is an additional email address that is associated with a user's mailbox and can be used as an alternate way to send and receive emails for that user.

    To set up an email alias for the user "John Smith Cloud adm", you can use the Azure portal or the Azure AD PowerShell module. Here's an example of how to do this using the Azure portal:

    1. Sign in to the Azure portal as a global administrator or an Exchange administrator.
    2. Go to the Azure Active Directory blade, and then select Users.
    3. In the list of users, select the user "John Smith Cloud adm".
    4. On the user's Properties blade, under Mail, click Add.
    5. In the Add an alias dialog, enter the email alias you want to add for the user (e.g., john.smith@xxxzzz.trade), and then click Add.
    6. The email alias will now be listed under Mail for the user.

    You can also use the Azure AD PowerShell module to add an email alias to a user. To do this, you can use the Set-AzureADUser cmdlet with the -EmailAliases parameter. Here's an example of the command you can use: 

    Set-AzureADUser -ObjectId <ObjectId> -EmailAliases @{add='john.smith@xxxzzz.trade'}

    Replace <ObjectId> with the object ID of the user "John Smith Cloud adm".

    I hope this helps! Let me know if you have any other questions.