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Microsoft Incident Resulting in Delivery Issues to M365

degraded
Mailgun · Resolved · 34m
Recorded timeline
  1. Started · monitoring
    Starting around 08:00 UTC, Microsoft began experiencing an incident causing an increased volume of deferred emails across all X regions. The affected responses are returning "451 4.7.500 Server busy". Our teams are actively monitoring the situation. No other email providers are currently affected.
  2. Update · monitoring
    We are continuing to monitor for any further issues.
  3. Resolved · resolved
    Microsoft Incident Resulting in Delivery Issues to M365 resolved