Registro DMARC
v=DMARC1;p=reject;rua=mailto:dmarc_rua@emaildefense.proofpoint.com;ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com;fo=0:1:s

Registro IPv4
host: whiteoakmedicalcenter.com
class: IN
ttl: 7200
type: A
ip: 208.91.197.27

Servidores DNS Principal (mname) y Secundario (rname)
host: whiteoakmedicalcenter.com
class: IN
ttl: 7200
type: SOA
mname: NS73.WORLDNIC.com
rname: namehost.WORLDNIC.com
serial: 123012309
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600