Registro DMARC
v=DMARC1;p=reject;fo=1;rua=mailto:dmarc_rua@emaildefense.proofpoint.com;ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com

Servidores DNS Principal (mname) y Secundario (rname)
host: hmconsumer.com
class: IN
ttl: 21600
type: SOA
mname: xdns1.hermanmiller.com
rname: domain_name_management.hermanmiller.com
serial: 26
refresh: 10800
retry: 3600
expire: 2419200
minimum-ttl: 900

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