Registro DMARC
v=DMARC1; p=reject;

Servidores DNS Principal (mname) y Secundario (rname)
host: epipelines.com
class: IN
ttl: 3600
type: SOA
mname: ns3.midamerican.com
rname: dnsadmin.midamerican.com
serial: 10
refresh: 900
retry: 600
expire: 86400
minimum-ttl: 3600

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