KnowBe4 incident

Defend - Inbound Mail Errors

Ongoing since 11:22 AM UTC, affecting Mail Flow.

monitoring Oct 31, 2026, 11:22 AM UTC

We have identified an issue that is causing some inbound emails for KnowBe4 Defend customers using Exchange Online connectors to be rejected. We have implemented a fix and are monitoring.

Started: Oct 31, 2026, 11:22 AM UTC
Resolved: Ongoing
Duration: ● 2h 18m
Detected by Pingoru: Oct 31, 2026, 11:22 AM UTC

Affected components

Mail Flow

Update timeline

monitoring Oct 31, 2026, 11:22 AM UTC

We have identified an issue that is causing some inbound emails for KnowBe4 Defend customers using Exchange Online connectors to be rejected. We have implemented a fix and are monitoring.

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