Fraudulent sending of emails appearing from legitimate sources.
Even with p=reject, some email servers may still accept spoofed messages, creating residual risks.
Mailchimp’s auto-DKIM setup may replace strict DMARC, exposing domains to spoofing and phishing attacks.
Emails bounced in CRM due to missing DKIM signatures and strict DMARC reject policy.
Attackers exploited Google Calendar to send phishing emails, causing DMARC failures for Yahoo recipients.
Google has ceased sending DMARC reports, creating blind spots for email security monitoring.
Spoofing targets depend on domain exposure, authentication gaps, and automation—not company size or staff count.
Even small, lightly-used domains can be exploited for spoofing, phishing, and scams without owner knowledge.
