Registro DMARC
v=DMARC1; p=quarantine;

Registro IPv4
host: smddemexico.com
class: IN
ttl: 7200
type: A
ip: 208.91.197.26

Servidores DNS Principal (mname) y Secundario (rname)
host: smddemexico.com
class: IN
ttl: 7200
type: SOA
mname: NS13.WORLDNIC.com
rname: namehost.WORLDNIC.com
serial: 118090418
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600

Información TXT
host: smddemexico.com
class: IN
ttl: 7200
type: TXT
txt: v=spf1 mx ~all
entries: Array