Registro DMARC
v=DMARC1; p=none; aspf=r; adkim=r;

Registro IPv4
host: sfcmn.com
class: IN
ttl: 14400
type: A
ip: 34.174.223.96

Servidores DNS Principal (mname) y Secundario (rname)
host: sfcmn.com
class: IN
ttl: 21600
type: SOA
mname: ns1.siteground.net
rname: root.usm90.siteground.biz
serial: 2020030424
refresh: 86400
retry: 7200
expire: 3600000
minimum-ttl: 86400

Servidor de Correo
host: sfcmn.com
class: IN
ttl: 3600
type: MX
pri: 20
target: mx20.mailspamprotection.com

Servidor de Correo
host: sfcmn.com
class: IN
ttl: 3600
type: MX
pri: 10
target: mx10.mailspamprotection.com

Servidor de Correo
host: sfcmn.com
class: IN
ttl: 3600
type: MX
pri: 30
target: mx30.mailspamprotection.com

Información TXT
host: sfcmn.com
class: IN
ttl: 14400
type: TXT
txt: v=spf1 +a +mx +a:usm90.siteground.biz  include:sfcmn.com.spf.auto.dnssmarthost.net ~all
entries: Array