Registro DMARC
v=DMARC1; p=reject; fo=1; ri=3600; rua=mailto:telstra@rua.agari.com; ruf=mailto:telstra@ruf.agari.com

Servidores DNS Principal (mname) y Secundario (rname)
host: telstrausa.com
class: IN
ttl: 44043
type: SOA
mname: adns01.bigpond.com
rname: corpdomains.team.telstra.com
serial: 2022011304
refresh: 10800
retry: 3600
expire: 2419200
minimum-ttl: 86400

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