I recently purchased a VPS from OVH with Centos 7 preinstalled. I want to make sure my hostname is correctly set.
According to some tutorials:
hostname returns the hostname
hostname -f returns the FQDN
After executing these commands, I got the same result: vpsxxxxxxxx.ovh.net I thought hostname and FQDN are different!
127.0.0.1 - localhost
IP - vpsxxxxxxxx.ovh.net - vpsxxxxxxxx
I am confused, I have linked a domain name that I have purchased separately to my VPS, I am also planning to add another domain name to run two sites in my VPS.
Is my hostname correct?
How can we call vpsxxxxxxxx.ovh.net? An external domain name, an internal domain, a hostname, a subdomain of ovh.net?
What about the two domains names that I have linked to the VPS? Do they need some configurations in /etc/hosts?
I have to fix these issues to enable postfix mail server.