Originally Posted by guy
Now, the problem is emails sent from the fedora to the xxx.com (now docked in ubuntu). when investigating the maillog in fedora, the xxx.com email address resolve back to the fedora host name which is the old host.
how do I get it to point to the new host?
You'll need to change the DNS pointers to direct your domain to the new host. You can also trick the old host into recognizing the new host by putting the IP of the new host in the /etc/hosts file on the old host.
It will look something like this: