sdp.edu.cn.		30 IN SOA dns1.sdp.edu.cn. admin.admin.com. (
				1715828753 ; serial
				3600       ; refresh (1 hour)
				3600       ; retry (1 hour)
				86400      ; expire (1 day)
				3600       ; minimum (1 hour)
				)

sdp.edu.cn.		30 IN TXT "v=spf1 include:spf.icoremail.net -all"

sdp.edu.cn.		30 IN A	211.137.201.16
sdp.edu.cn.		30 IN AAAA 2001:250:585e::2

Mail exchangers:
sdp.edu.cn.		30 IN MX 5 mx1.icoremail.net.

Name servers:
sdp.edu.cn.		30 IN NS dns2.sdp.edu.cn.
sdp.edu.cn.		30 IN NS dns1.sdp.edu.cn.