Getting Outlook.com Ready for Bulk Email Compliance

## Executive Summary Microsoft is enforcing stricter email authentication and sending controls for Outlook.com/Hotmail/Live users who send more than 5,000 messages per day, requiring implementation of DMARC, SPF, DKIM, TLS 1.2, accurate From information, one-click unsubscribe handling, timely processing of complaints, and maintaining complaint rates below 0.3%. The article explains practical steps: set up DMARC reporting, identify and configure legitimate third-party senders (e.g., Salesforce, HubSpot) for SPF/DKIM alignment, move DMARC to quarantine/reject once validated, and continuously monitor domains to maintain deliverability and protect against spoofing.