Registro DMARC
v=DMARC1; p=reject; rua=mailto:46b8708e09fb858@rep.dmarcanalyzer.com; ruf=mailto:46b8708e09fb858@for.dmarcanalyzer.com; fo=1;

Servidores DNS Principal (mname) y Secundario (rname)
host: thinkstockphotos.ca
class: IN
ttl: 604800
type: SOA
mname: ns-1600.awsdns-08.co.uk
rname: dnsadmin.gettyimages.com
serial: 1
refresh: 300
retry: 600
expire: 86400
minimum-ttl: 900