Alias disappearing from AD on proxyaddress attribute

Anri Cela 1 Reputation point
2021-08-18T09:48:47.533+00:00

Hello,

Would appreciate any feedback on the issue which we are facing. Is pretty simple to explain.

We are populating the proxyaddress attribute for a certain user on Active Directory by adding smtp: user.name@keyman .com. The changes will be saved and after the sync with Azure this alias will even appear in Azure/Office365.

The problem is that after a certain time this proxyaddress will disappear from the AD side and therefore from Azure as well.

Any idea what might be causing this problem?

Thnx
A

Active Directory
Active Directory
A set of directory-based technologies included in Windows Server.
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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. Andy David - MVP 142.3K Reputation points MVP
    2021-08-18T12:56:51.967+00:00

    Ok, technically, that is not supported :)
    https://learn.microsoft.com/en-us/exchange/decommission-on-premises-exchange

    Since there is no Exchange Server, and changes are not done with the Exch Tools, you wont be able to use the built-in auditing tools to see why its being removed.

    You will need to either use 3rd party auditing tools. or install Exchange on-prem and make the changes via Exchange and then you can check the admin audit log to see who changed it ( Assuming its changed through Exchange)

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