indexo.dev

mail25.cz

.cz dns crawl

First seen 2026-05-23 · Last seen 2026-06-02 · ok HTTP/1.1 200 2035 ms crawled 2026-05-28

CZ · 185.216.220.53 · AS51586 ServerZone s.r.o.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Nápověda | Mail25.cz
Description
Mail25.cz - škálovatelný email hosting
Language
zxx

Technology

Server
Apache
jQuery
1.12.4 known XSS (<3.5)

Third-party hosts loaded (1)

  • matomo.serverzone.dev×1

Registration

Registrar
REG-GRANSY
Created
2019-03-17
Expires
2027-03-16 286 days left
Updated
2023-06-05
Name servers
  • ns.serverzone.cz
  • ns.serverzone.eu
  • ns.serverzone.pro
  • ns.serverzone.sk

DNS records live

NS
  • ns.serverzone.cz
  • ns.serverzone.eu
  • ns.serverzone.pro
  • ns.serverzone.sk
MX
  • 10 mx.mail25.cz

Email authentication weak

SPF
v=spf1 a include:spf.mail25.cz ip6:2a01:430:235:ff00::/56 -all
strict (-all)
DMARC
not published
DKIM
  • mail: v=DKIM1; h=sha256; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAo+44R+EmyZDNtD4Eq4VPASLyNkC14Qooon/PkYuwcKJ6BmGujQrnGIWfGYfzjw8IcttP…
selectors probed

Certificate (current)

R12
from 2026-03-29 to 2026-06-27
Expires in 25 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 40/100 Checked live page: https://www.mail25.cz/napoveda/

present
  • x-frame-options
findings
  • missing HSTS
  • missing Content Security Policy
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
SAMEORIGIN

Links to (2)