[otrs] Help needed on parameters

Hi guys I have got a following problem: when a customer gets a notification about the new state of his /her ticket FOR EXAMPLE *** THIS IS JUST A NOTE *** The state of your ticket "2007020110000016" has been changed by "ali ali" to "open". http://yourhost.example.com/otrs/customer.pl?Action=CustomerZoom&TicketID=41 Your OTRS Notification Master *** THIS IS JUST A NOTE *** I want instead of yourhost.example.com it writes the login page for customer web interface something like: otrs.(companyname).com Is that possible. Regards Ramziddin