So far , you're probably are not using vm1 as the DNS server for your '''host''' machine. We'll will need to change that the DNS configuration in order for the email server to work operate correctly. Normally you don't need an entire DNS server for running an email server, you just can simply add an '''MX ''' record in your registrar's web interface, but we haven't paid for our domains so ; therefore, we don't have a registrar with a web interface.

Modify your /etc/resolv.conf to use vm1 as '''Perform the name server. This will not be a permanent change but thatfollowing steps:''s ok, we only need it for the email labs. You'll have to remember to do this every time you reboot your host.

#Modify your '''/etc/resolv.conf''' on your '''host''' machine to use your '''vm1''' machine as the name server. This will not be a permanent change, since it will only be required for our email labs.# We will have to remember to do this every time you reboot your host. If you your regular (internet) DNS lookups slow down significantly - try to , you can update the DNS server configuration on '''vm1 ''' to forward requests to the Google nameserver (8.8.8.8) instead of your hostmachine.