Registro DMARC
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Servidores DNS Principal (mname) y Secundario (rname)
host: infosysblogs.com
class: IN
ttl: 1800
type: SOA
mname: udns1.cscdns.net
rname: premiumdns.support.neustar
serial: 2019111094
refresh: 10800
retry: 3900
expire: 2592000
minimum-ttl: 172800

Información TXT
host: infosysblogs.com
class: IN
ttl: 21600
type: TXT
txt: v=spf1 -all
entries: Array