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

Servidores DNS Principal (mname) y Secundario (rname)
host: fredandpamelabuffett.org
class: IN
ttl: 14400
type: SOA
mname: da2.unmc.edu
rname: dnsadmin.unmc.edu
serial: 8
refresh: 1800
retry: 6300
expire: 2592000
minimum-ttl: 900

Información TXT
host: fredandpamelabuffett.org
class: IN
ttl: 14400
type: TXT
txt: v=spf1 -all
entries: Array