opensrs.cn.		30 IN SOA ns.edong.com. root.edong.com. (
				2039123315 ; serial
				7200       ; refresh (2 hours)
				3600       ; retry (1 hour)
				3600       ; expire (1 hour)
				3600       ; minimum (1 hour)
				)

opensrs.cn.		30 IN A	58.215.64.230

Mail exchangers:
opensrs.cn.		30 IN MX 0 mail.opensrs.cn.

Name servers:
opensrs.cn.		30 IN NS dns1.opensrs.cn.
opensrs.cn.		30 IN NS dns2.opensrs.cn.