How do domain owners protect their reputation from spoofing?

DMARC is the primary defense against **domain spoofing**. It tells receiving servers to reject or quarantine messages failing authentication that claim to come from your domain. Without **DMARC** enforcement, attackers can freely spoof your identity.

Proper SPF and DKIM setup enables **DMARC alignment**. **SPF** authorizes which servers can send for your domain; **DKIM** cryptographically signs messages. Both must align with your domain for **DMARC** to pass.

Monitoring complements enforcement: DMARC reports reveal **spoofing** attempts, enabling incident response. BIMI adds visual authentication, showing verified logos that spoofers can't display. Together, these protocols protect **domain reputation** from **impersonation**.