Your Outlook.com inbox may be silently missing emails since Nov 5, and even senders with valid settings are getting blocked
AI-summarised brief · reviewed before publication
Outlook.com and Hotmail users have reported that legitimate messages are being rejected since at least Nov. 5, with senders receiving 550 5.7.23 SPF/DKIM/DMARC failures even when their domains have valid records. The issue appears intermittent, affecting a small percentage of inbound mail and varying by Microsoft server routing; some messages arrive after a resend. Reports from Microsoft forums, Reddit and Windows Latest cite dozens of cases across different providers, including Zoho and Microsoft 365, confirming that the problem is not limited to a single client. Microsoft has not issued an official statement or identified a configuration change, leaving recipients unaware of missing mail until senders notify them. Businesses relying on Outlook communication report disrupted workflows and increased support tickets as they chase correspondence.
💡 Why It Matters
- · The silent drop of authenticated emails erodes trust in Microsoft’s free mail platform, forcing users to adopt work‑arounds and question the reliability of a service that handles billions of messages daily.