itust.cn.		30 IN SOA f1g1ns1.dnspod.net. freednsadmin.dnspod.com. (
				1566960480 ; serial
				3600       ; refresh (1 hour)
				180        ; retry (3 minutes)
				1209600    ; expire (2 weeks)
				180        ; minimum (3 minutes)
				)

itust.cn.		30 IN TXT "v=spf1 include:spf.mail.qq.com ~all"

itust.cn.		30 IN A	210.31.128.11

Mail exchangers:
itust.cn.		30 IN MX 5 mxbiz1.qq.com.
itust.cn.		30 IN MX 10 mxbiz2.qq.com.

Name servers:
itust.cn.		30 IN NS f1g1ns1.dnspod.net.
itust.cn.		30 IN NS f1g1ns2.dnspod.net.