Registro DMARC
v=DMARC1; p=none; aspf=r; adkim=r;

Registro IPv4
host: newmetro.com
class: IN
ttl: 86400
type: A
ip: 35.212.23.140

Servidores DNS Principal (mname) y Secundario (rname)
host: newmetro.com
class: IN
ttl: 14400
type: SOA
mname: ns1.siteground.net
rname: admins.siteground.com
serial: 58
refresh: 10800
retry: 3600
expire: 1209600
minimum-ttl: 3600

Servidor de Correo
host: newmetro.com
class: IN
ttl: 3600
type: MX
pri: 1
target: smtp.google.com

Información TXT
host: newmetro.com
class: IN
ttl: 14400
type: TXT
txt: v=spf1 +ip4:35.212.23.140 +a include:_spf.google.com +mx ~all
entries: Array