Registro DMARC
v=DMARC1; p=none

Registro IPv4
host: azbuka-u.ru
class: IN
ttl: 300
type: A
ip: 91.210.171.17

Servidores DNS Principal (mname) y Secundario (rname)
host: azbuka-u.ru
class: IN
ttl: 1800
type: SOA
mname: marvin.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2357115416
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

Servidor de Correo
host: azbuka-u.ru
class: IN
ttl: 300
type: MX
pri: 0
target: mx.yandex.net

Información TXT
host: azbuka-u.ru
class: IN
ttl: 300
type: TXT
txt: v=spf1 a mx include:_spf.yandex.net ~all
entries: Array

Información TXT
host: azbuka-u.ru
class: IN
ttl: 300
type: TXT
txt: yandex-verification: 1effa42223e6683d
entries: Array

Información TXT
host: azbuka-u.ru
class: IN
ttl: 300
type: TXT
txt: v=spf1 ip4:85.143.174.239 include:_spf.google.com include:_spf.yandex.net include:_spf.mail.ru ~all
entries: Array