How to remove horder / create a webmail subdomain

[jadent]

We do not use horde or host email on our server. In fact i would like to create webmail.domain.com on the server. But if i create a domain or subdomain webmail.domain.com the domain does not have any affect and it just goes straight to the horde login. Ahhhh!

How can i remove horde so this does not happen or atleast just get it so i can create webmail.domain.com domains?

Thanks