Registro DMARC
v=DMARC1; p=reject; rua=mailto:report@dmarc.amazon.com; ruf=mailto:report@dmarc.amazon.com

Servidores DNS Principal (mname) y Secundario (rname)
host: kindlebooks.pl
class: IN
ttl: 86400
type: SOA
mname: nsgbr.comlaude.co.uk
rname: dnstech.comlaude.com
serial: 2022030812
refresh: 86400
retry: 7200
expire: 2419200
minimum-ttl: 3600

Información TXT
host: kindlebooks.pl
class: IN
ttl: 900
type: TXT
txt: v=spf1 -all
entries: Array