indexo.dev

serialletter.de

.de crawl

First seen 2026-05-11 · Last seen 2026-05-16 · ok HTTP/1.1 200 4510 ms crawled 2026-05-16

DE · 217.160.41.41 · AS8560 IONOS SE

Reputation 87/100 weak security headers no dmarc policy

sector tech type homepage

HTML metadata

Title
Serien E-Mails, Serienfaxe, Serienbriefe, Serien PDF-Dateien, Newsletter Software, E-Mail-Marketing Software Permission Marketing Programm, Outlook Newsletter software, html newsletter software, fax software
Description
SuperMailer, SerialLetterAndFax, Serien E-Mails, Serienfaxe, Serienbriefe, fax software, Serien PDF-Dateien, Newsletter Software, E-Mail-Marketing Software Permission Marketing Programm, Outlook Newsletter software, html newsletter, WinFax Pro, Outlook Fax, AVM FRITZ!Fax, Microsoft Faxdienst, Ghostscript PDF-Dateien, Serienfaxe mailen, Versand von Serienfaxe, EMail Versandsoftware
Generator
Microsoft FrontPage 12.0

Technology

Server
nginx

Third-party hosts loaded (2)

  • www.serialletterandfax.de×1
  • www.supermailer.de×1

Registration

Updated
2019-09-18
Name servers
  • nsa0.schlundtech.de.
  • nsb0.schlundtech.de.
  • nsc0.schlundtech.de.
  • nsd0.schlundtech.de.

DNS records live

NS
  • nsa0.schlundtech.de
  • nsb0.schlundtech.de
  • nsc0.schlundtech.de
  • nsd0.schlundtech.de
MX
  • 10 serialletter.de

Email authentication weak

SPF
not published
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R12
from 2026-03-21 to 2026-06-19
Expires in 31 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://serialletter.de/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (11)

Linked from (2)