Alias disappearing from AD on proxyaddress attribute

Question

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

Answer 1

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)