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c_small's avatar
c_small
Copper Contributor
Dec 18, 2023

MOERA address not created (Resolved)

I have an issue where the MOERA address was never created for two user accounts.

 

the users are synced from on-prem AD

no On-premises exchange exists and never did exist

all other users have their moera address created as expected.


I cannot manually add the moera address to the accounts.

 

how can I get exchange to create the moera address?

  • LeonPavesic's avatar
    LeonPavesic
    Silver Contributor

    Hi c_small,

    the Microsoft Online Email Routing Address (MOERA) is automatically generated and included in the proxyAddresses attribute within Microsoft Entra ID, a process commonly referred to as proxy calculation.

    Key aspects of MOERA creation include:

    • The MOERA is formed from the user's userPrincipalName prefix, combined with the initial domain suffix.
    • The proxyAddresses attribute in Active Directory is a multi-value property containing various known address entries.
    • During synchronization to Microsoft Entra ID, values from the on-premises Active Directory's mail or proxyAddresses attribute are copied to a shadow mail or proxyAddresses attribute in Microsoft Entra ID.
    • Subsequently, internal rules within Microsoft Entra ID are applied to calculate the final proxyAddresses for the object.

    If certain users do not have a MOERA address, various factors could be causing the issue.
    Consider checking this:

    • Ensure correct settings for mail, mailNickName, and proxyAddresses attributes in your on-premises Active Directory.
    • Verify the uniqueness of the userPrincipalName among all security principal objects in the directory forest.
    • Confirm domain verification in Microsoft Entra ID.

    How the proxyAddresses attribute is populated in Microsoft Entra ID - Active Directory | Microsoft Learn

    Microsoft Entra UserPrincipalName population - Microsoft Entra ID | Microsoft Learn


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    Kindest regards,


    Leon Pavesic
    (LinkedIn)

    • c_small's avatar
      c_small
      Copper Contributor

      LeonPavesic Thank you. The common issues you mentioned have already been ruled out.

       

      how can the MORERA address be populated? What can be done to trigger its creation now?

  • Andres-Bohren's avatar
    Andres-Bohren
    Steel Contributor

    Hi c_small 

     

    The Exchange Hybrid Configuration Wizard adds the MOERA Address to the Default EmailAddressPolicies.

    Check with:

    Get-EmailAddressPolicy -Identity "Default Policy" | fl Name, Enabled*

     

    I guess these two Accounts have the "EmailAddressPolicyEnabled" set to False

    Check with:

    Get-Mailbox -Identity YourUser | fl EmailAddressPolicyEnabled

     

    Regards

    Andres

     

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