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

Servidores DNS Principal (mname) y Secundario (rname)
host: onstarmexico.com
class: IN
ttl: 3600
type: SOA
mname: nsx1.gm.com
rname: dnsadm.gm.com
serial: 39
refresh: 3600
retry: 3600
expire: 1209600
minimum-ttl: 300

Servidor de Correo
host: onstarmexico.com
class: IN
ttl: 600
type: MX
pri: 10
target: mail.comunicaciongm.com.mx

Información TXT
host: onstarmexico.com
class: IN
ttl: 600
type: TXT
txt: v=spf1 include:servers.mcsv.net ?all
entries: Array