Add a domain to the Active Directory

https://lazyadmin.nl/it/add-a-domain-to-the-active-directory/ 

 How to add a domain to the Active Directory 

 

 

 

 Login to your domain controller 

   

 

 Open the “Active Directory Domains and Trusts” 

   

 

 Open the Properties of Active Directory Domains and Trusts 

 Right-click on the top item in the left tree view and select properties 

 

 

 Add the new Domain Name 

 In the UPN Suffixes dialog, enter the new domain name in the “ Alternative UPN Suffixes ” field and click on  Add 

 

 

 Apply the settings 

 Click Apply and close the windows. The domain is now added to the domain controller. 

 

 (optional) for replication to other domain controllers 

 If you have multiple domain controllers you can force the replication with the following command in PowerShell / CMD:  repadmin /syncall /AdeP 

 

 

 

 You should now be able to use the new domain name in the Active Directory or in the Exchange Administration Center.