systemadm.in.		30 IN SOA ns1.systemadm.in. wangbo.systemadm.in. (
				2024031519 ; serial
				14400      ; refresh (4 hours)
				14400      ; retry (4 hours)
				1209600    ; expire (2 weeks)
				300        ; minimum (5 minutes)
				)

systemadm.in.		30 IN TXT "v=spf1 include:spf.mail.qq.com ~all"

Mail exchangers:
systemadm.in.		30 IN MX 10 mxbiz2.qq.com.
systemadm.in.		30 IN MX 5 mxbiz1.qq.com.

Name servers:
systemadm.in.		30 IN NS ns3.systemadm.in.
systemadm.in.		30 IN NS ns1.systemadm.in.
systemadm.in.		30 IN NS ns2.systemadm.in.