My company is running Win2K3 with Exchange 2003 installed. This machine is also hosting our certificate services for exchange/https mail download. OWA is also running on this machine as well.
Basically when users go to access OWA from the web they have to type in https://servername1.companyname.com/exchange
. I want to shorten this down to just https://mail.companyname.com
. My ISP DNS is setup with a single A record for 'servername' pointing to my external IP.
Can anyone tell me what the easiest way to accomplish this is without any disruptions or downtime?