duanduan.net.		30 IN SOA ns11.xincache.com. enterprise1dnsadmin.dnspod.com. (
				1576582482 ; serial
				3600       ; refresh (1 hour)
				180        ; retry (3 minutes)
				1209600    ; expire (2 weeks)
				180        ; minimum (3 minutes)
				)

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

Mail exchangers:
duanduan.net.		30 IN MX 10 mxbiz2.qq.com.
duanduan.net.		30 IN MX 5 mxbiz1.qq.com.

Name servers:
duanduan.net.		30 IN NS ns12.xincache.com.
duanduan.net.		30 IN NS ns11.xincache.com.