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

Servidores DNS Principal (mname) y Secundario (rname)
host: compose.com
class: IN
ttl: 3600
type: SOA
mname: dns1.p05.nsone.net
rname: webmaste.us.ibm.com
serial: 1731334979
refresh: 43200
retry: 7200
expire: 1209600
minimum-ttl: 3600

Servidor de Correo
host: compose.com
class: IN
ttl: 3600
type: MX
pri: 0
target: 

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