WHM makes it easy to change the hostname of the server. But what's the overall impact of doing this? Besides mail headers, what else does it affect? Do you have to reboot the box afterward?
It also changes your bash prompt. So instead of say [email protected] it could be [email protected] . It doesnt put the full hostname. It puts just the first word.
Oh BTW the server doesn't need to be rebooted. Although I do suggest you reboot it. Proftp and alot of other services try to verify the hostname when the server boots up. So for safety I'd give it a reboot.