I'm managing a custom domain name on Outlook.com. I used wlalias and Outlook Aliases tools to create aliases specific for the domain (postmaster, webmaster, abuse etc.). It worked the first time on the user. 

But I had to delete the user for some reason and created a new one. However, each time I try to add the postmaster/webmaster aliases back to the new account, it fails with Error 9003: Passport Error. The original account linked with these aliases no longer exists...

Is there any way to fix this? 

Thank you