Registro DMARC
v=DMARC1; p=none; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com

Servidores DNS Principal (mname) y Secundario (rname)
host: analytics-software.com
class: IN
ttl: 86400
type: SOA
mname: edns3.ultradns.com
rname: danny\.griffin.tradeweb.com
serial: 2021101902
refresh: 86400
retry: 86400
expire: 86400
minimum-ttl: 86400