Registro DMARC
v=DMARC1; p=none; aspf=r; adkim=r;

Servidores DNS Principal (mname) y Secundario (rname)
host: keio.ac.jp
class: IN
ttl: 86400
type: SOA
mname: nsm2.keio.ac.jp
rname: postmaster.keio.ac.jp
serial: 2026071302
refresh: 10800
retry: 3600
expire: 1209600
minimum-ttl: 3600

Servidor de Correo
host: keio.ac.jp
class: IN
ttl: 10800
type: MX
pri: 0
target: vmx2.m0.keio.ac.jp

Información TXT
host: keio.ac.jp
class: IN
ttl: 10800
type: TXT
txt: v=spf1 ip4:131.113.0.0/16 ip4:133.27.0.0/16 ip6:2001:df0:eb::/48 ip6:2001:df2:c900::/48 ~all
entries: Array

Información TXT
host: keio.ac.jp
class: IN
ttl: 10800
type: TXT
txt: 0FACCAAEEFFC738295FE129F28D029AD
entries: Array

Información TXT
host: keio.ac.jp
class: IN
ttl: 10800
type: TXT
txt: docusign=30ff29ed-f927-4b33-a1ed-a85f6e6e3e9f
entries: Array