Registro DMARC
v=DMARC1;p=reject;fo=1:d:s;pct=100;rua=mailto:dmarc_agg@vali.email,mailto:0e5a5c34@inbox.ondmarc.com;ruf=mailto:0e5a5c34@inbox.ondmarc.com

Registro IPv4
host: code.com
class: IN
ttl: 300
type: A
ip: 204.74.99.100

Servidores DNS Principal (mname) y Secundario (rname)
host: code.com
class: IN
ttl: 3600
type: SOA
mname: dns01.salesforce.com
rname: hostmaster.salesforce.com
serial: 2017010647
refresh: 1800
retry: 900
expire: 2592000
minimum-ttl: 1800

Información TXT
host: code.com
class: IN
ttl: 86400
type: TXT
txt: v=spf1 -all
entries: Array