The server is running on Virtualmin control panel and all DNS settings are configurable through its GUI so you won't have to do anything in shell. DNS is more or less working (most domains work fine) but there is some issue with two subdomains which just don't work. Also when I check my domain at http://intodns.com/mydomain.com there are two errors. Please send me a pm for more details. Experience with Virtualmin is a bonus.