Incidentsby GlyphMicrosoft Incident Resulting in Delivery Issues to M365
Sep 4, 12:20 UTCSep 4, 12:54 UTC
Duration
34m
Impact
Informational
Root cause
Not disclosed
Mailgun, 90 days
9 incidents
Affected
Not listed by the vendor.
Final update
Microsoft has resolved the underlying issue, we are seeing deliveries to M365 process normally.
Timeline
- Resolved · Sep 4, 12:54 UTC
Microsoft has resolved the underlying issue, we are seeing deliveries to M365 process normally.
- Monitoring · Sep 4, 12:22 UTC
We are continuing to monitor for any further issues.
- Monitoring · Sep 4, 12:20 UTC
Starting around 08:00 UTC, Microsoft began experiencing an incident causing an increased volume of deferred emails across all M365 regions. The affected responses are returning "451 4.7.500 Server busy". Our teams are actively monitoring the situation. Sending to other email providers is not affected.