wipm.ac.cn.		30 IN SOA mailserver.wipm.ac.cn. hostmaster. (
				383        ; serial
				900        ; refresh (15 minutes)
				600        ; retry (10 minutes)
				86400      ; expire (1 day)
				3600       ; minimum (1 hour)
				)

wipm.ac.cn.		30 IN TXT "v=spf1 include:spf.mail.cstnet.cn -all"

Mail exchangers:
wipm.ac.cn.		30 IN MX 5 mx.cstnet.cn.

Name servers:
wipm.ac.cn.		30 IN NS ns4.cstnet.cn.
wipm.ac.cn.		30 IN NS ns3.cstnet.cn.