Outage in Mailprotector
Mail delivery delays to Microsoft 365 domains
Resolved MinorIncident Report
Microsoft has announced a service issue affecting Exchange Online in M365. We are seeing email delivery delays to M365 domains with temporary error notifications. We will continue to monitor the Microsoft report. Mailprotector's CloudFilter and Shield services are operational.
Components affected
Mailprotector CloudFilter and SafeSend Email SecurityNeed to monitor Mailprotector outages?
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Latest Updates ( sorted recent to last )
RESOLVED
3 days ago - at 01/23/2026 01:50PM
This incident has been resolved.
MONITORING
3 days ago - at 01/22/2026 11:38PM
We will continue to monitor the status Microsoft provides at https://status.cloud.microsoft/. It appears Microsoft is making progress in some of their affected zones. Logs shows some emails are beginning to deliver, but without Microsoft's confirmation of a resolution, we expect deferrals to continue.
MONITORING
3 days ago - at 01/22/2026 10:36PM
Microsoft's status has not changed. For more information, please visit https://status.cloud.microsoft/
MONITORING
3 days ago - at 01/22/2026 07:51PM
Microsoft has announced a service issue affecting Exchange Online in M365. We are seeing email delivery delays to M365 domains with temporary error notifications. We will continue to monitor the Microsoft report. Mailprotector's CloudFilter and Shield services are operational.
Latest Mailprotector outages
Mail log ingestion issue on CloudFilter - about 1 month ago
API notifications with Microsoft interrupted - about 1 month ago
Radar tests failng to complete - 3 months ago
CloudMail client connections timing out - 3 months ago
Quarantined emails queued due to AWS issue - 3 months ago
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