Registro DMARC
v=DMARC1; p=reject;

Servidores DNS Principal (mname) y Secundario (rname)
host: thermos.shop
class: IN
ttl: 21600
type: SOA
mname: 01.dnsv.jp
rname: hostmaster.dnsv.jp
serial: 1740104190
refresh: 3600
retry: 900
expire: 604800
minimum-ttl: 300

Información TXT
host: thermos.shop
class: IN
ttl: 3600
type: TXT
txt: v=spf1 -all
entries: Array