Registro DMARC
v=DMARC1; p=reject;rua=mailto:9tydwhpb@ag.dmarcian.com

Registro IPv4
host: macmillanhighered.com
class: IN
ttl: 300
type: A
ip: 3.82.166.182

Servidores DNS Principal (mname) y Secundario (rname)
host: macmillanhighered.com
class: IN
ttl: 900
type: SOA
mname: ns-687.awsdns-21.net
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Información TXT
host: macmillanhighered.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 a include:mktomail.com include:spf.braintreegateway.com include:amazonses.com -all
entries: Array

Información TXT
host: macmillanhighered.com
class: IN
ttl: 300
type: TXT
txt: amazonses:PixyDfdYlc84tXCPPtfWRAuBc+1wKefsGuqRRSqQURM=
entries: Array