acc.edu.vn.		30 IN SOA ns1.digipowerdns.com. root.acc.edu.vn. (
				2019082807 ; serial
				7200       ; refresh (2 hours)
				1800       ; retry (30 minutes)
				604800     ; expire (1 week)
				181        ; minimum (3 minutes 1 second)
				)

acc.edu.vn.		30 IN TXT "v=spf1 a mx ip4:112.78.6.25 ~all"

acc.edu.vn.		30 IN A	112.78.6.25

Mail exchangers:
acc.edu.vn.		30 IN MX 0 mail.acc.edu.vn.

Name servers:
acc.edu.vn.		30 IN NS ns4.digipowerdns.com.
acc.edu.vn.		30 IN NS ns3.digipowerdns.com.
acc.edu.vn.		30 IN NS ns2.digipowerdns.com.
acc.edu.vn.		30 IN NS ns1.digipowerdns.com.