Incidentsby GlyphWidespread Microsoft 365 IP Block Causing Delivery Failures for Multiple Users
Aug 15, 01:31 UTCAug 15, 02:05 UTC
Duration
34m
Impact
Informational
Root cause
Not disclosed
Twilio, 90 days
548 incidents
Affected
Not listed by the vendor.
Final update
The incident is resolved and block rates are back to normal but customers will see change in block classifications from Microsoft 365. Users that continue to see elevated blocks can submit delisting requests to Microsoft by sending an email with a copy of the error message, and the blocked IP address, to "delist@microsoft.com". Delisting requests can also be made via the Office 365 Anti-Spam IP Delist Portal at https://sender.office.com/
Timeline
- Resolved · Aug 15, 02:05 UTC
The incident is resolved and block rates are back to normal but customers will see change in block classifications from Microsoft 365. Users that continue to see elevated blocks can submit delisting requests to Microsoft by sending an email with a copy of the error message, and the blocked IP address, to "delist@microsoft.com". Delisting requests can also be made via the Office 365 Anti-Spam IP Delist Portal at https://sender.office.com/
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