3tot.vn.		30 IN SOA ns1.sapo.vn. hostmaster.3tot.vn. (
				2022010502 ; serial
				14400      ; refresh (4 hours)
				3600       ; retry (1 hour)
				1209600    ; expire (2 weeks)
				86400      ; minimum (1 day)
				)

3tot.vn.		30 IN TXT "v=spf1 a mx ~all"

3tot.vn.		30 IN A	210.245.8.134

Mail exchangers:
3tot.vn.		30 IN MX 10 mail.3tot.vn.

Name servers:
3tot.vn.		30 IN NS ns2.sapo.vn.
3tot.vn.		30 IN NS ns1.sapo.vn.