Login as the local user created earlier. Configure the network interface settings for the DNS records you have obtained previously. Using the menus at the top of the screen, navigate to the Network Configuration applet as shown in the sequence below:

If you need to increase resolution to see the entire applet, you can do so here:

Double-click the correct interface under the Devices tab. Be sure to set Activate Device when computer starts, Statically set IP addresses, Manual IP address settings, and Primary DNS and Secondary DNS servers. When you are done, save your settings with File » Save. Logout of your session, and reboot.

It is important that the hostname command returns the fully qualified domain name (FQDN) for your system. Make sure the hostname found in the following file is the correct one:

For extra certainty that the system will associate its FQDN with the DNS IP address, you can add a line (as shown below) to your /etc/hosts file using the command sudo vi /etc/hosts

Where the IP address is followed by the FQDN and then by the short version of the hostname. What you do not want is for your hostname to appear on the same line as localhost.