Registro DMARC
v=DMARC1; p=reject;

Servidores DNS Principal (mname) y Secundario (rname)
host: hexionspecialtychemicals.com
class: IN
ttl: 16666
type: SOA
mname: ns10.dnsmadeeasy.com
rname: dns.dnsmadeeasy.com
serial: 2009010120
refresh: 43200
retry: 3600
expire: 1209600
minimum-ttl: 180

Servidor de Correo
host: hexionspecialtychemicals.com
class: IN
ttl: 1800
type: MX
pri: 0
target: hexionspecialtychemicals.com

Información TXT
host: hexionspecialtychemicals.com
class: IN
ttl: 1800
type: TXT
txt: v=spf1 -all
entries: Array