Outage in Tessian US

Intermittent Gateway Delivery Issues — [451 ECONNREFUSED]

Resolved Minor
June 26, 2025 - Started 6 months ago - Lasted 11 days

Incident Report

A small number of US hosted customers may have experienced delays with email delivery routed through their Tessian Gateway, beginning the morning of June 26th. You can confirm by logging into your Tessian Portal: Integrations > Email Deployments > Gateway > Alerting to check deliveries via Gateway Alerting Page. Engineering is actively working to remediate all impacted Gateways, if not done so already. Please open a support ticket via the Portal if you would like more information, or if you are still awaiting remediation.

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Latest Updates ( sorted recent to last )
MONITORING 5 months ago - at 07/03/2025 08:28PM

After additional investigation, we're deploying an additional fix for the potential cause. The team is now monitoring the results to confirm a full resolution.

MONITORING 6 months ago - at 07/01/2025 06:36PM

The team has deployed a fix for a contributing cause, and is monitoring the results.
Things remain stable, and they continue a thorough investigation into the full incident.

MONITORING 6 months ago - at 06/30/2025 01:31PM

The situation remains stable, with no re-occurrence.
The team is making progress into the investigation of the original cause, and will keep this incident open and monitoring until that is complete.

MONITORING 6 months ago - at 06/27/2025 09:06PM

For impacted tenants, Gateway performance has remains stable for the last day.
The team remains in heightened monitoring as they continue to work on initial cause investigation.

INVESTIGATING 6 months ago - at 06/26/2025 05:22PM

All impacted Gateways have been remediated by Engineering.
They continue to monitor closely and investigate the initial cause.

INVESTIGATING 6 months ago - at 06/26/2025 04:47PM

A small number of US hosted customers may have experienced delays with email delivery routed through their Tessian Gateway, beginning the morning of June 26th.

You can confirm by logging into your Tessian Portal: Integrations > Email Deployments > Gateway > Alerting to check deliveries via Gateway Alerting Page.

Engineering is actively working to remediate all impacted Gateways, if not done so already. Please open a support ticket via the Portal if you would like more information, or if you are still awaiting remediation.

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