city.kadoma.osaka.jp	IN	MX	cluster6.us.messagelabs.com
city.kadoma.osaka.jp	IN	MX	cluster6a.us.messagelabs.com
city.kadoma.osaka.jp	IN	NS	ns1.utility.k-opti.com
city.kadoma.osaka.jp	IN	NS	ns2.utility.k-opti.com