hzau.edu.cn.		30 IN SOA dns. root.dns.hzau.edu.cn. (
				2021123648 ; serial
				3600       ; refresh (1 hour)
				600        ; retry (10 minutes)
				86400      ; expire (1 day)
				14400      ; minimum (4 hours)
				)

hzau.edu.cn.		30 IN TXT "v=spf1 ip4:211.69.143.17 include:spf.corp-email.com
include:spfb.corp-email.com include:spf.abroad.eyou.net -all"
hzau.edu.cn.		30 IN TXT "2g1q7yv3jzqydk84w66yv0q7l1w1fkn8"

Mail exchangers:
hzau.edu.cn.		30 IN MX 5 smtp.hzau.edu.cn.
hzau.edu.cn.		30 IN MX 1 mx.hzau.edu.cn.

Name servers:
hzau.edu.cn.		30 IN NS dns.hzau.edu.cn.
hzau.edu.cn.		30 IN NS dns1.hzau.edu.cn.