Registro DMARC
v=DMARC1; p=reject; rua=mailto:admin@examplesofletters.com; ruf=mailto:admin@examplesofletters.com

Registro IPv4
host: examplesofletters.com
class: IN
ttl: 651
type: A
ip: 217.147.94.93

Servidores DNS Principal (mname) y Secundario (rname)
host: examplesofletters.com
class: IN
ttl: 21110
type: SOA
mname: ns1093.ui-dns.biz
rname: hostmaster.1and1.com
serial: 2014010910
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 300

Servidor de Correo
host: examplesofletters.com
class: IN
ttl: 300
type: MX
pri: 20
target: mail.examplesofletters.com

Información TXT
host: examplesofletters.com
class: IN
ttl: 3110
type: TXT
txt: v=spf1 mx a include:is-81945.houle.co.uk ip4:109.73.65.62 ~all
entries: