Registro DMARC
v=DMARC1;p=reject;pct=100

Registro IPv4
host: dermoclinic.com
class: IN
ttl: 3600
type: A
ip: 217.154.100.26

Servidores DNS Principal (mname) y Secundario (rname)
host: dermoclinic.com
class: IN
ttl: 21600
type: SOA
mname: ns1105.ui-dns.org
rname: hostmaster.1und1.com
serial: 2017060118
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 600

Servidor de Correo
host: dermoclinic.com
class: IN
ttl: 3600
type: MX
pri: 10
target: mail.dermoclinic.com

Información TXT
host: dermoclinic.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 ip4:217.154.100.26 -all
entries: Array