Registro DMARC
v=DMARC1; p=reject; fo=1; ri=3600; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com;

Servidores DNS Principal (mname) y Secundario (rname)
host: hsbcpensions.com
class: IN
ttl: 21600
type: SOA
mname: ns3.hsbc.com
rname: dnsmaster.hsbc.com
serial: 21
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 900

Información TXT
host: hsbcpensions.com
class: IN
ttl: 900
type: TXT
txt: v=spf1 -all
entries: Array