Registro DMARC
v=DMARC1; p=reject; rua=mailto:ar28m0422@progist.net; ruf=mailto:ruf.prodmarc@progist.in; fo=1

Servidores DNS Principal (mname) y Secundario (rname)
host: heintra.com
class: IN
ttl: 1800
type: SOA
mname: ns901.adwebtech.com
rname: dnsadmin.adwebtech.com
serial: 2026072601
refresh: 7200
retry: 1800
expire: 1209600
minimum-ttl: 3600

Información TXT
host: heintra.com
class: IN
ttl: 3600
type: TXT
txt: _6cv902v7f8eql7qmjttydjayqukltwh
entries: Array