Delete and create domains

Hi, i´m a new user,
I create a new domain in my hosting, but i put gmail for the mails and like i don´t want this, because i need outlook. I delete the domain. Now, i want to rewrite the domain, and dreamhost say me that:

Can’t add domain: already in our system.

what is this??


Please don’t crosspost. I’ve already answered this in another forum.