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: jcrew-outlet.com
class: IN
ttl: 86400
type: SOA
mname: ns.rackspace.com
rname: hostmaster.rackspace.com
serial: 1709839435
refresh: 3600
retry: 300
expire: 1814400
minimum-ttl: 300