Registro DMARC
v=spf1 a mx include:gransy.com

Registro IPv4
host: fetsm.org
class: IN
ttl: 600
type: A
ip: 149.210.147.4

Servidores DNS Principal (mname) y Secundario (rname)
host: fetsm.org
class: IN
ttl: 1800
type: SOA
mname: ns.gransy.com
rname: root.gransy.com
serial: 2752518184
refresh: 86400
retry: 900
expire: 1209600
minimum-ttl: 1800

Servidor de Correo
host: fetsm.org
class: IN
ttl: 3600
type: MX
pri: 10
target: mx.internetserver.cz

Información TXT
host: fetsm.org
class: IN
ttl: 1800
type: TXT
txt: v=spf1 a mx include:gransy.com
entries: Array