ColdFusion Web Application to be updated

We are facing a problem with url [login to view URL] that is developed in Coldfusion. Earlier the URL was redirecting to [login to view URL] and worked fine. Due to a domain expiry problem we are now redirecting to a IP address ( [login to view URL] ). However the code has some references to the domain name and login related functionality does not work. We need the coldfusion developer to remove the references to noddy url and point to the new address. Additionally the ip address is to be accessed from a config file so that it can be changed at a later date. At the end of the task, the following needs to be done : a) Config file based reference to ip address b) Login functionality working