DMARC Reports: Your Secret Weapon Against Domain Fraud (And How to Read Them)
Update (January 2026): Since this post was originally written, Gmail and Yahoo’s DMARC requirements have moved from warning to full enforcement. As of November 2025, Gmail actively rejects non-compliant emails from bulk senders. Microsoft also joined in May 2025, requiring DMARC for senders of 5,000+ daily emails to Outlook.com, Hotmail, and Live.com. If you haven’t set up DMARC yet, now is the time - your emails may already be getting rejected. ...