Servidores DNS Principal (mname) y Secundario (rname)
host: sigtec-f.com
class: IN
ttl: 523
type: SOA
mname: ns-889.awsdns-47.net
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: sigtec-f.com
class: IN
ttl: 523
type: MX
pri: 10
target: mail5.sigtec-f.com

Información TXT
host: sigtec-f.com
class: IN
ttl: 3223
type: TXT
txt: v=spf1 +ip4:153.126.251.183 ~all
entries: v=spf1 +ip4:153.126.251.183 ~all