I have recently installed EXIM4 mail server on my Ubuntu 10.10 server.

I am using the following document to run the configuration. https://help.ubuntu.com/10.10/serverguide/C/exim4.html

I received the following error after running sudo dpkg-reconfigure exim4-config

hostname --fqdn did not return a fully qualified name, dc_minimaldns will not
work. Please fix your /etc/hosts setup.
* Stopping MTA for restart
hostname --fqdn did not return a fully qualified name, dc_minimaldns will not
work. Please fix your /etc/hosts setup.
[ OK ]
* Restarting MTA [ OK ]


I am not sure what this error is referring to. My "hosts" file looks like this.

191.108.1.190 PowerEdge-200 # Added by NetworkManager
127.0.0.1 localhost.localdomain localhost
::1 PowerEdge-200 localhost6.localdomain6 localhost6
127.0.1.1 PowerEdge-200

# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts


I have not finished the configuration as described by the EXIM4 server document. I still need to run
sudo update-exim4.conf. However I did test the server to see if it send email and I was able to get an email sent to an external address.

Any idea why this error means? How do I fix it?