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: apac-biz.com
class: IN
ttl: 3600
type: SOA
mname: dns1.p04.nsone.net
rname: nadmin.intuit.com
serial: 1646259283
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 300