Registro DMARC
v=DMARC1; p=reject; sp=reject; rua=mailto:dmarc@fh-dortmund.de;

Registro IPv4
host: fh.do
class: IN
ttl: 300
type: A
ip: 193.25.18.68

Servidores DNS Principal (mname) y Secundario (rname)
host: fh.do
class: IN
ttl: 19440
type: SOA
mname: ns.inwx.de
rname: hostmaster.inwx.de
serial: 2026091004
refresh: 10800
retry: 3600
expire: 1209600
minimum-ttl: 3600

Información TXT
host: fh.do
class: IN
ttl: 300
type: TXT
txt: v=spf1 -all
entries: Array