How to Stop Spam Emails: SPF, DKIM & DMARC Explained

By Steve / Tuesday, September 2, 2025 | 1 min

How to Stop Spam Emails: SPF, DKIM & DMARC Explained

Tired of spam emails and phishing attacks? Setting up SPF, DKIM, and DMARC records can protect your inbox and improve email delivery rates.

1. What Is SPF?

SPF (Sender Policy Framework) tells mail servers which hosts are allowed to send email for your domain.

2. What Is DKIM?

DKIM (DomainKeys Identified Mail) adds a cryptographic signature to prove your messages weren’t altered in transit.

3. What Is DMARC?

DMARC (Domain-based Message Authentication, Reporting & Conformance) combines SPF and DKIM, instructing servers how to handle unauthenticated emails.

4. Why They Matter

  • Reduce spam and phishing emails.
  • Protect your domain reputation.
  • Improve inbox delivery rates.

Next Steps

Learn more about MX records and how they direct your email. Then configure SPF, DKIM, and DMARC in your DNS settings.

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