Registro DMARC
v=DMARC1; p=quarantine; rua=mailto:dn2k@tux.it

Registro IPv4
host: tux.it
class: IN
ttl: 300
type: A
ip: 51.15.126.74

Servidores DNS Principal (mname) y Secundario (rname)
host: tux.it
class: IN
ttl: 900
type: SOA
mname: ns-578.awsdns-08.net
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: tux.it
class: IN
ttl: 300
type: MX
pri: 10
target: mail.protonmail.ch

Información TXT
host: tux.it
class: IN
ttl: 300
type: TXT
txt: v=spf1 a mx include:_spf.protonmail.ch include:sendgrid.net ~all
entries: v=spf1 a mx include:_spf.protonmail.ch include:sendgrid.net ~all

Información TXT
host: tux.it
class: IN
ttl: 300
type: TXT
txt: protonmail-verification=095a71798c84fb38eef55c8047c87470d4751682
entries: protonmail-verification=095a71798c84fb38eef55c8047c87470d4751682