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

Registro IPv4
host: 4cs-solutions.com
class: IN
ttl: 12845
type: A
ip: 66.55.77.39

Servidores DNS Principal (mname) y Secundario (rname)
host: 4cs-solutions.com
class: IN
ttl: 12845
type: SOA
mname: ns1.4cs-solutions.com
rname: root.4cs-solutions.com
serial: 3000000005
refresh: 14400
retry: 3600
expire: 1209600
minimum-ttl: 3600

Servidor de Correo
host: 4cs-solutions.com
class: IN
ttl: 12846
type: MX
pri: 0
target: mail.4cs-solutions.com

Información TXT
host: 4cs-solutions.com
class: IN
ttl: 12846
type: TXT
txt: v=spf1 a mx ip4:66.55.77.39 -all
entries: v=spf1 a mx ip4:66.55.77.39 -all