Registro DMARC
v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email; fo=1

Servidores DNS Principal (mname) y Secundario (rname)
host: greatourdoorsoutpost.com
class: IN
ttl: 300
type: SOA
mname: dns1.ipmanagerinc.net
rname: tech.brandshelter.com
serial: 2026032500
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 300