Registro DMARC
v=DMARC1; p=none;

Registro IPv4
host: sy.com
class: IN
ttl: 3608
type: A
ip: 185.74.252.18

Servidores DNS Principal (mname) y Secundario (rname)
host: sy.com
class: IN
ttl: 21600
type: SOA
mname: ns77.hostlife.net
rname: sysadmin.hostlife.net
serial: 2026101601
refresh: 3600
retry: 1800
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: sy.com
class: IN
ttl: 14400
type: MX
pri: 0
target: sy.com

Información TXT
host: sy.com
class: IN
ttl: 14400
type: TXT
txt: v=spf1 ip4:185.74.252.18 +a +mx ~all
entries: