ahau.edu.cn.		30 IN SOA abc.ahau.edu.cn. liukai.ahau.edu.cn. (
				2020103796 ; serial
				300        ; refresh (5 minutes)
				600        ; retry (10 minutes)
				7200       ; expire (2 hours)
				3600       ; minimum (1 hour)
				)

ahau.edu.cn.		30 IN TXT "v=spf1 ip4:114.213.145.198 ip6:2001:250:5405:13::198
include:spf.icoremail.net -all"

Mail exchangers:
ahau.edu.cn.		30 IN MX 5 mx-ahau-edu-cn.icoremail.net.
ahau.edu.cn.		30 IN MX 10 smtp.ahau.edu.cn.

Name servers:
ahau.edu.cn.		30 IN NS abc.ahau.edu.cn.
ahau.edu.cn.		30 IN NS efg.ahau.edu.cn.