Microsoft

Email service provider generating DMARC aggregate reports for users.

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Microsoft Begins Rejecting Emails Without Proper Authentication

Outlook now bounces unauthenticated emails; ensure SPF, DKIM, and DMARC are correctly configured.

Microsoft Begins Rejecting Emails Without Proper Authentication
Email Deliverability
Microsoft and Google DMARC Reports Ignore Syntax Errors

DMARC aggregate reports continue despite significant syntax errors, as Microsoft and Google overlook issues.

Microsoft and Google DMARC Reports Ignore Syntax Errors
Email Security