Tessian EU incident
Intermittent Inbound & Outbound Email Check Delays for EU
Resolved after 3 days 16 hours, affecting Core Email Protection API and AEDLP Email Misdelivery Protection and 1 more, on January 30, 2026.
After monitoring for the past day no further increase in timeouts has been observed and email checks have returned to normal.
Affected components
Update timeline
- monitoring Jan 30, 2026, 06:07 PM UTC
We observed intermittent email check timeouts on our EU server earlier today. Between 11:00-1:00 UTC: Adaptive Email DLP - up to 6% of Outbound emails may have sent partially or fully unchecked. Core Email Protection API - up to 2% of Inbound emails may have been delivered partially or fully unchecked. The issue has stabilized, and our team has not seen a recurrence as we closely monitor. We will continue to monitor through the weekend and update if anything changes.
- monitoring Feb 02, 2026, 11:59 AM UTC
A small number of email check timeouts were seen on our EU server earlier today. Between 08:22-09:52 UTC: Core Email Protection API - up to 0.06% of Inbound emails may have been delivered partially or fully unchecked. We will continue to monitor and update if anything changes.
- resolved Feb 03, 2026, 10:48 AM UTC
After monitoring for the past day no further increase in timeouts has been observed and email checks have returned to normal.
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