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

Registro IPv4
host: healthcas.net
class: IN
ttl: 7036
type: A
ip: 208.91.197.23

Servidores DNS Principal (mname) y Secundario (rname)
host: healthcas.net
class: IN
ttl: 7200
type: SOA
mname: NS39.WORLDNIC.COM
rname: namehost.WORLDNIC.COM
serial: 125031810
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600