wqndt.com. 30 IN SOA . hostmaster.nameserver. ( 98 ; serial 28800 ; refresh (8 hours) 7200 ; retry (2 hours) 604800 ; expire (1 week) 5 ; minimum (5 seconds) ) Mail exchangers: wqndt.com. 30 IN MX 10 mx.ym.163.com.