Outage in Tessian EU
Gatateway outage between 07:30 UTC to 08:56 UTC, 13th May 2026.
Resolved Major
May 13, 2026 - Started 3 days ago
- Lasted 1 day
Incident Report
Summary AI Generated
Tessian EU experienced a Gateway outage from 07:30 to 08:56 UTC on May 13th, 2026, caused by a capacity limitation during a routine security patch application. The outage affected inbound and outbound email servers, showing them as 'Unavailable' to customers. The issue was fully resolved with server statuses restored to 'Available' and queued emails automatically delivered without data loss.
Between 07:30 UTC to 08:56 UTC, 13th May 2026 a Gateway outage occurred for customers that manifested as inbound and outbound server status being 'Unavailable'.
This has since been resolved and the server statuses should now all be 'Available' once more. Emails in the queue are expected to clear themselves automatically.
We are still working through how this happened and will share further details as soon as possible. Please open a support case if you are still experiencing delays. Thank you for your on-going patience.
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Latest Updates ( sorted recent to last )
MONITORING
3 days ago - at 05/13/2026 02:04PM
Between approximately 07:30 UTC and 08:36 UTC, some customers experienced an outage where inbound and outbound server statuses were shown as 'Unavailable'.
The issue was caused by a capacity limitation encountered during the application of a routine security patch.
This has been fully resolved — server statuses should now show as 'Available'.
Any emails queued during the incident are expected to be delivered automatically without intervention.
No data loss occurred, and we anticipate minimal delivery delays.
We apologise for any disruption caused, please open a support ticket if you have any questions.
MONITORING
3 days ago - at 05/13/2026 10:58AM
Between 07:30 UTC to 08:56 UTC, 13th May 2026 a Gateway outage occurred for customers that manifested as inbound and outbound server status being 'Unavailable'.
This has since been resolved and the server statuses should now all be 'Available' once more. Emails in the queue are expected to clear themselves automatically.
We are still working through how this happened and will share further details as soon as possible. Please open a support case if you are still experiencing delays. Thank you for your on-going patience.
Latest Tessian EU outages
Delays in Outbound Security Events Being Available in the Portal - about 8 hours ago
Tessian Gateway Not Accepting Mail - 19 days ago
Gateway Connection Issues impacting mailflow for Gsuite Customers - about 1 month ago
Internal Emails Missing from Investigate & Respond - about 1 month ago
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