Registro DMARC
v=DMARC1; p=none; rua=mailto:dmarc@smtp.mailtrap.live; ruf=mailto:dmarc@smtp.mailtrap.live; rf=afrf; pct=100

Registro IPv4
host: greencentury.dev
class: IN
ttl: 14400
type: A
ip: 31.220.89.225

Servidores DNS Principal (mname) y Secundario (rname)
host: greencentury.dev
class: IN
ttl: 21600
type: SOA
mname: ns-cloud-c1.googledomains.com
rname: cloud-dns-hostmaster.google.com
serial: 47
refresh: 21600
retry: 3600
expire: 259200
minimum-ttl: 300

Información TXT
host: greencentury.dev
class: IN
ttl: 14400
type: TXT
txt: v=spf1 include:_spf.smtp.mailtrap.live ~all
entries: Array