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: otis-enable.com
class: IN
ttl: 300
type: A
ip: 204.74.99.100

Servidores DNS Principal (mname) y Secundario (rname)
host: otis-enable.com
class: IN
ttl: 21600
type: SOA
mname: pdns209.ultradns.com
rname: administrative\.contact.otis.com
serial: 2021040805
refresh: 86400
retry: 86400
expire: 86400
minimum-ttl: 86400