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

Servidores DNS Principal (mname) y Secundario (rname)
host: catalystdx.com
class: IN
ttl: 21600
type: SOA
mname: pdns1.cscdns.net
rname: postmaster.idexx.com
serial: 10
refresh: 10800
retry: 3600
expire: 1209600
minimum-ttl: 900

Información TXT
host: catalystdx.com
class: IN
ttl: 21600
type: TXT
txt: v=spf1 -all
entries: Array