Changing domain name

[theoutlander at o2.pl]

Hello,

Let me start by informing you that my production domain (about 50 users)
based on SMB4a15 works flawlessly for over half a year, despite some
problems with the hardware. Unfortunately, management has some strange
requirements.

Is it possible to change the working domain name? I doubt it but I thought
that I ask wiser than me.

Cheers,
Outlander