How to Add Alias of a user in AD

• Login to Domain controller:
• In Server Manager click on Tools and then on Active Directory Users and Computers:
• Right Click on the User whom Alias needs to be added:
• Now click on Attribute Editor and navigate to Proxy Addresses and then click on Edit:
• Now put the Alias in the form of "smtp:abc.yxz.com" then click on Add and OK: