9kangjian.com.		30 IN SOA 9kangjian.com. dns.9kangjian.com. (
				1          ; serial
				10800      ; refresh (3 hours)
				3600       ; retry (1 hour)
				86400      ; expire (1 day)
				3600       ; minimum (1 hour)
				)

Mail exchangers:
9kangjian.com.		30 IN MX 1 mx7.9kangjian.com.