Where do I find the mail server name in Linux
Build your own DNS name server on Linux | Opensource.com Apr 07, 2017 How to configure nameserver in Linux - Kernel Talks Sep 26, 2017 Course: Linux Domain Name Server (DNS) | Linux Academy
You will need to place your DNS server address on the first line of this file and remember to end the line with a carriage return (hit enter) as seen below: nameserver 10.20.1.2 Editing the tail file instead of the actual resolv.conf file will prevent your change from being lost upon a system reboot.
Change DNS settings on Linux
Ubuntu Server - for scale out workloads | Ubuntu
May 04, 2019 How to Set or Change System Hostname in Linux