Registro DMARC
v=DMARC1;p=reject;rua=mailto:dmarc-reporting@letterstream.com;fo=1;

Registro IPv4
host: letterstream.com
class: IN
ttl: 90
type: A
ip: 52.26.197.112

Registro IPv4
host: letterstream.com
class: IN
ttl: 90
type: A
ip: 34.211.126.119

Servidores DNS Principal (mname) y Secundario (rname)
host: letterstream.com
class: IN
ttl: 900
type: SOA
mname: ns-868.awsdns-44.net
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: letterstream.com
class: IN
ttl: 3600
type: MX
pri: 0
target: letterstream-com.mail.protection.outlook.com

Información TXT
host: letterstream.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:spf.protection.outlook.com include:spf.mandrillapp.com include:emsd1.com include:emsd2.com include:emsd3.com include:242388138.spf07.hubspotemail.net ~all
entries: Array

Información TXT
host: letterstream.com
class: IN
ttl: 3600
type: TXT
txt: MS=79CB9852FB355B99A57530906B2B2BF65DF1345D
entries: Array

Información TXT
host: letterstream.com
class: IN
ttl: 3600
type: TXT
txt: google-site-verification=1GiMWeIOtK1vTEpGFOhh20iOSW7WodETXyjEBLKCHJM
entries: Array

Información TXT
host: letterstream.com
class: IN
ttl: 3600
type: TXT
txt: google-site-verification=MvlwKsFd4AQZvWJ7mOBSUi5Ht2zeo4FtO7JVKQFHKhc
entries: Array

Información TXT
host: letterstream.com
class: IN
ttl: 3600
type: TXT
txt: mu80apatoauvo4f7iv9qbhnp8i
entries: Array