attempted printing: error hostname bad

[jaredm]

When I try to lp a text file I get an error message that says 
"Get_local_host: hostname 'www.whatever.com' bad". It doesn't actually 
say whatever.com but has some of my ip and address in there. How do you 
fix this? I have read somewhere you have to alter the /etc/hosts file to 
include your ip address, hostname, and hostname domain. I have no idea 
how I can identify them and when I looked in the /etc/hosts file it only 
includes the local ip address 127.0.0.1 and my local domain name and 
localhost.