Registro DMARC
v=DMARC1; p=none; rua=mailto:dmarc@viettuan.vn

Registro IPv4
host: viettuan.vn
class: IN
ttl: 14400
type: A
ip: 112.78.2.51

Servidores DNS Principal (mname) y Secundario (rname)
host: viettuan.vn
class: IN
ttl: 14400
type: SOA
mname: dns1.netsoft.com.vn
rname: vdconline.tld
serial: 2020120155
refresh: 28800
retry: 7200
expire: 1209600
minimum-ttl: 14400

Servidor de Correo
host: viettuan.vn
class: IN
ttl: 14400
type: MX
pri: 10
target: mx.vnptemail.vn

Información TXT
host: viettuan.vn
class: IN
ttl: 14400
type: TXT
txt: v=spf1 a mx include:spf.vnptemail.vn ~all
entries: Array