Email authentication protocol preventing domain spoofing and phishing attacks.
Attackers exploited Google Calendar to send phishing emails, causing DMARC failures for Yahoo recipients.
Non-compliant emails face gradual rejection; ensure DKIM, SPF, and DMARC are properly configured.
Microsoft DMARC aggregate reports reveal recipient domains, creating insider threats and increasing phishing risk.
Outlook now bounces unauthenticated emails; ensure SPF, DKIM, and DMARC are correctly configured.
Unexpected SPF and CNAME modifications bypassed DMARC, raising concerns about domain security with GoDaddy.
Domain authentication alone doesn’t guarantee deliverability; security and compliance are critical for email success.
Google has ceased sending DMARC reports, creating blind spots for email security monitoring.
