Registro DMARC
v=DMARC1; p=reject; fo=1; ri=3600; rua=mailto:dmarc_rua@emaildefense.proofpoint.com;ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com

Servidores DNS Principal (mname) y Secundario (rname)
host: firstcornerstone.com
class: IN
ttl: 900
type: SOA
mname: dns1.p08.nsone.net
rname: hostmaster.nsone.net
serial: 1736576544
refresh: 10800
retry: 3600
expire: 1209600
minimum-ttl: 900

Información TXT
host: firstcornerstone.com
class: IN
ttl: 900
type: TXT
txt: v=spf1 -all
entries: Array

Información TXT
host: firstcornerstone.com
class: IN
ttl: 900
type: TXT
txt: MS=ms35208050
entries: Array