yic.ac.cn.		30 IN SOA ns1.sfn.cn. root.ns1.sfn.cn. (
				2024092500 ; serial
				600        ; refresh (10 minutes)
				120        ; retry (2 minutes)
				604800     ; expire (1 week)
				7200       ; minimum (2 hours)
				)

yic.ac.cn.		30 IN TXT "v=spf1 include:spf.mail.cstnet.cn -all"
yic.ac.cn.		30 IN TXT
"1b6da708c78f2e6a44760f5b654042c1b37a3ff917897c791747e38d28b0a452"

Mail exchangers:
yic.ac.cn.		30 IN MX 10 mx.cstnet.cn.

Name servers:
yic.ac.cn.		30 IN NS ns2.sfn.cn.
yic.ac.cn.		30 IN NS ns1.sfn.cn.