dopo.vn.		30 IN SOA ns1.nina.vn. hostmaster.dopo.vn. (
				2022083101 ; serial
				14400      ; refresh (4 hours)
				3600       ; retry (1 hour)
				1209600    ; expire (2 weeks)
				86400      ; minimum (1 day)
				)

dopo.vn.		30 IN TXT "v=spf1 a mx ~all"

dopo.vn.		30 IN A	210.245.8.133

Mail exchangers:
dopo.vn.		30 IN MX 10 mail.dopo.vn.

Name servers:
dopo.vn.		30 IN NS ns2.nina.vn.
dopo.vn.		30 IN NS ns1.nina.vn.