transitioning Exchange2003 to 2007
I am halfway through transitioning Exchange 2003 to 2007, and need a little help with regard to the OWA part! we shall say that the 2003 box is called Exch and the new 2007 box is called Exch1. At present Exch has a fixed IP and Exch1 is using DHCP. When I decommission Exch the new box (Exch1) will take on the IP of Exch.
The mailboxes that i haven't moved all work fine through outlook and OWA, the mailboxes I have moved work fine with Outlook but OWA is causing me a few problems. The internal URL works but with a certificate error (I shall concentrate on that later), but i am a little confused with regard to the external URL.
Obviously at present the external URL isn't working, but what do I need to do in order for it to work?
Is it a case of let SWGFL know the name of the new box or will DNS sort out this problem when the IP address is reassigned? This side of helping run a network isn't my forte and all and any help will be much appreciated.