spam protection setup guide
Is your domain really protected?
Enter your domain to run a live DMARC check and see how easy it for others to spoof your domain.
No sign-up required. Safe to try on any domain.
Articles
- DMARC for non sending domains
- Manual DMARC Monitoring vs Automated Monitoring
- Reverse Engineering Phishing
- ARC - Authenticated Received Chain
- Email impersonation scams explained
- Click/Link Tracking
- DMARC Enforcement in 2026
- Cyber Insurance and DMARC Enforcement
- TLS-RPT Record
- SMTP Smuggling
- DMARC record
- DNS and NS
- 🇩🇪 Welche Hosting Anbieter unterstützen DMARC
- MX records
- Domain Authentication
- The impact of Business Email Compromise
- CEO Scam
- DNS records
- Email Verification
- DMARC2 vs DMARC1
- DNS Leak
- DNS Check
- Return-path record
- CNAME record
- A quiet Google update just made SPF more forgiving
- DARA Records
- SOA records
- CNAME vs. A Records
- Cracking a 1024-bit DKIM Key
- Top 7 SPF Check Tools Compared 2026
- DNS Lookup
- Reverse DNS Lookup
- Der deutsche Bundestag hat ein Spoofing-Problem
December 14, 2024
Setup FastMail SPF, DKIM, DMARC, MX Records for Domain Authentication
SPF (Sender Policy Framework) helps prevent email spoofing by allowing domain owners to specify which mail servers are authorized to send email on behalf of their domain.
Read more →Bulletproof emails with DMARC
Check domain and follow the instructions to nail down your DMARC configuration.
No expert knowledge needed!