I'm trying to set an alias to my admin acoount for my domain @centrodediasolyluna.com. Setting it up a few days ago, i deleted this alias ( info@centrodediasolyluna.com), and now I'm trying to set it again, but I'm gettin this error:

Obviously, this email (centrodediasolyluna.com belongs to my organization. 

Please, could you help me to find a solution?

Kind Regards