I want to use my own webmail application instead of those 3 offered by JH and prepare it for a subdomain like webmail.myservicedomain.com. My problem now is how could I make it for my customers to use it so that when they type in webmail.somedomain.com to actualy use the webmail.myservicedomain.com, but to see in their browser webmail.somedomain.com? Something like the generic webmail select one got accessing mail.mydomain.com.