Change Panel/Webmail Access from IP to Domains

Hello guys,

How do I change access to the Control Web Panel (for admin and clients) and webmail from ip to use of custom domains.

For example;

1. adminpanel.admindomain.com (admin panel)

2. clientpanel.clientdomain.com (client panel)

3. webmail.clientdomain.com (access to webmail)

you would need to set custom vhosts for that by using proxy configuration