Registro DMARC
v=DMARC1;p=none;pct=100;rua=mailto:admin-mail@rtg.com;ri=86400;fo=1;

Registro IPv4
host: rtg.com
class: IN
ttl: 3591
type: A
ip: 47.180.117.238

Servidores DNS Principal (mname) y Secundario (rname)
host: rtg.com
class: IN
ttl: 17511
type: SOA
mname: ns1.mydyndns.org
rname: zone-admin.dyndns.com
serial: 2015042243
refresh: 10800
retry: 1800
expire: 604800
minimum-ttl: 1800

Servidor de Correo
host: rtg.com
class: IN
ttl: 3591
type: MX
pri: 20
target: mx2.mailhop.org

Servidor de Correo
host: rtg.com
class: IN
ttl: 3591
type: MX
pri: 10
target: mail.rtg.com

Información TXT
host: rtg.com
class: IN
ttl: 591
type: TXT
txt: v=spf1 ip4:173.198.121.128/29 ip4:173.198.121.130 -all
entries: Array