Running Open BSD 3.3, Apache 1.36 and Bind 9.
Vhost www.example.com resolves find but can't resolve example.com.
Set ServerName and ServerAlias
My main server resolves both find www.examplemain.com and examplemain.com
Check out the Apache FAQ on Virtual hosts - it may help.
If not, can you post your config and the output from nslookup for the different domains.