yangliuan.com.		30 IN SOA ns1.dns100.net. admin.dns100.net. (
				1546510673 ; serial
				7200       ; refresh (2 hours)
				3600       ; retry (1 hour)
				1209600    ; expire (2 weeks)
				1800       ; minimum (30 minutes)
				)

Mail exchangers:
yangliuan.com.		30 IN MX 20 mail.yangliuan.com.

Name servers:
yangliuan.com.		30 IN NS ns1.dns100.net.
yangliuan.com.		30 IN NS ns2.dns100.net.