Setting Up SPF, DKIM, and DMARC for Email Security
Email remains one of the most powerful business communication tools — and one of the most targeted by cybercriminals. Attackers often attempt to spoof your domain, sending fake messages that appear to come from your company.
To combat this, modern email systems rely on three essential DNS-based authentication standards: SPF, DKIM, and DMARC. Setting these up correctly protects your brand, boosts deliverability, and builds trust with your clients.
Why Email Authentication Matters
Without proper email authentication, your messages can:
End up in spam folders.
Be rejected by recipient mail servers.
Be used by attackers to impersonate your business.
Implementing SPF, DKIM, and DMARC helps you prove that emails sent from your domain are legitimate and verified.
1. SPF (Sender Policy Framework)
Purpose: Defines which mail servers are authorized to send emails on behalf of your domain.
SPF helps prevent forged sender addresses in emails.
