ScanDNS Blog

Everything about DNS, email security, DMARC, SPF, DKIM and more

All DNS 3 Email security 1 Email spoofing 1 Domain protection 1 Phishing prevention 1 Monitoring 1 Update 1 DNSSEC 1 TLD 1

DNSSEC TLD

What happened during the .de DNS outage?

2 min read 210

A large number of .de domains became unreachable worldwide. This wasn’t a hack. It was DNS.

Sem Lambrechts · 06 May 2026

Update

Website redesign & new features

1 min read 164

We’ve redesigned the ScanDNS website. The new version is built as a long-form landing page with more clarity, better structure, and improved usability.

Sem Lambrechts · 29 Apr 2026

DNS Monitoring

How to check if your website is down for others

1 min read 151

Your website might work for you. But that doesn’t mean it works for everyone. Users in other regions can experience downtime while your site looks completely fine locally. Here’s how to check if your website is down for others.

Sem Lambrechts · 12 Apr 2026

DNS

Common DNS mistakes that break your website (and how to fix them)

3 min read 205

A single DNS misconfiguration can cause downtime, email issues, or make your domain unreachable. Here are the most common DNS mistakes.

Sem Lambrechts · 31 Mar 2026

Email security DNS Email spoofing Domain protection Phishing prevention

How to prevent email spoofing on your domain

2 min read 327

Email spoofing allows attackers to send emails that look like they come from your domain. This can damage your reputation and trick users into trusting malicious messages. The solution is simple! Configure the right DNS records.

Sem Lambrechts · 29 Mar 2026