This is a static IP.
The name was changed. The IP address was not, however at one time this was a gateway and is now server only.
This is an old installation, upgraded through several versions and touched by others over the years. Perhaps it is not as clean as it should be.
It's only function is a mail server. One idea I had would be to do another clean installation and just restore users, passwords and email from the workstation backup. That is really all I need - everything else is so easy to configure. I have searched and read but I have not found what files I would need to restore to do that - if it is even possible.
I cannot thank both of you who have replied enough. I truly appreciate it and any advice you might have.