Registro DMARC
v=DMARC1; p=none;

Registro IPv4
host: sanmarcossda.com
class: IN
ttl: 1800
type: A
ip: 198.23.51.26

Servidores DNS Principal (mname) y Secundario (rname)
host: sanmarcossda.com
class: IN
ttl: 1800
type: SOA
mname: ns1.businesswebhosts.com
rname: root.businesswebhosts.com
serial: 1718922796
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 86400

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