- This must be done using ADSIEDIT.
- On a local domain controller open ADSIEDIT.msc
- Go to View on the top toolbar and click Advanced Features.
- Expand Default naming contextExpand DC=DOMAIN,DC=COM
- Navigate to the correct OU where the user is located.
- Right click the user you want to edit and click Properties.
- Scroll down to the attribute: ProxyAddresses and click Edit.
- It should appear blank at first, you will need to add the current email address the user has like so SMTP:Office365test@contoso.com and the new alias as smtp:testingoffice365@contoso.com. The primary email address will need to have SMTP capitalized and any other ones after that will need to be lowercase.
- Exit out of ADSIEDIT and you can either wait the default 3 hours that it takes to sync new data to Office 365 or go to your DirSync server and perform a manual sync.
Add Email Alias to Office 365 Account that has AD Connect (DirSync) Print
Modified on: Tue, 15 Jan, 2019 at 2:49 PM
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