Registro DMARC
v=DMARC1; p=none

Registro IPv4
host: sierrabuilders.biz
class: IN
ttl: 2785
type: A
ip: 216.117.135.167

Servidores DNS Principal (mname) y Secundario (rname)
host: sierrabuilders.biz
class: IN
ttl: 86400
type: SOA
mname: ns1.sierrabuilders.biz
rname: info.visionasp.com
serial: 2020110501
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 10800

Servidor de Correo
host: sierrabuilders.biz
class: IN
ttl: 2784
type: MX
pri: 0
target: sierrabuilders-biz.mail.protection.outlook.com

Información TXT
host: sierrabuilders.biz
class: IN
ttl: 2784
type: TXT
txt: v=spf1 include:spf.protection.outlook.com -all
entries: Array