Outage in One.com

Issues with Mail services

Resolved Major
September 25, 2025 - Started about 1 month ago - Lasted 3 days
Official incident page

Incident Report

We are currently experiencing issues with our mail servers affecting some customers. Our Engineering team is doing all they can to get our systems back to normal as soon as possible. No email will be lost because of this issue. We will keep you updated on the progress and resolution of this issue, first update will be no later than 19:00 CET.
Components affected
One.com Mail services

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Latest Updates ( sorted recent to last )
RESOLVED about 1 month ago - at 09/28/2025 01:15PM

This incident has been resolved.

MONITORING about 1 month ago - at 09/28/2025 12:28PM

All mail services have been successfully restored and are now fully operational. Please be advised that overall system load remains elevated, which may result in minor performance delays. Normal service levels are expected to resume shortly. We appreciate your continued patience and understanding.

MONITORING about 1 month ago - at 09/28/2025 09:17AM

Update – Our engineering team has begun re-enabling access for affected mailboxes. This process is being done in stages to manage system load.
At present, approximately one-third of the impacted customers have access again, but performance may be very slow or appear unresponsive during this stage. Additional groups of users will be re-enabled once the system stabilizes.
This gradual roll-out only affects the customers already impacted by this incident. No other services are affected.
We will continue to provide updates as progress is made.

MONITORING about 1 month ago - at 09/27/2025 03:52PM

Update – Our engineering team has deployed a fix for the issue affecting one of our mail servers. Delivery to affected mailboxes is expected to be fully functional by tomorrow morning.

In the meantime, affected customers can temporarily receive new incoming emails by creating a mail forward to another mailbox (please note: a forward to a mailbox on the same domain will not work). Messages sent before the forward is created will be delivered once the issue is fully resolved.

During this process, webmail access may be temporarily limited. We appreciate your patience while we complete the resolution.

MONITORING about 1 month ago - at 09/26/2025 11:55AM

Our engineering team has identified the root cause of the ongoing issue with one of our mail servers, and a fix is now being deployed.

A limited number of customers may continue to experience delays in receiving inbound emails. Please be assured that all affected messages are secure and will be delivered once the issue is fully resolved.

During the deployment of the fix, webmail access may be temporarily limited.

We expect the resolution to be completed within 48 hours.

MONITORING about 1 month ago - at 09/26/2025 09:53AM

We are still experiencing an issue with one of our mail servers, which is affecting some customers.
Our engineering team is actively working to restore full service as quickly as possible.

For affected customers, inbound emails are currently delayed but will be delivered once the issue is resolved.
Please note that webmail access may be limited while fixes are being implemented.

We are working on getting an estimate for when the on-going issue is solved.

MONITORING about 1 month ago - at 09/26/2025 08:02AM

We are still experiencing an issue with one of our mail servers, which is affecting some customers.
Our engineering team is actively working to restore full service as quickly as possible.

For affected customers, inbound emails are currently delayed but will be delivered once the issue is resolved.
Outgoing emails are being delivered as normal.

MONITORING about 1 month ago - at 09/25/2025 09:32PM

An initial fix has been deployed to address the email service issue. Our Engineering team continues to work on a full resolution and will deploy further improvements as they become available.

We will provide another update once the remaining fixes have been completed and verified.

Thank you for your continued patience and understanding.

IDENTIFIED about 1 month ago - at 09/25/2025 08:30PM

Our Engineering team is still working on deploying a fix for the issue affecting the email service.

Next update no later than 23:30 CEST.

IDENTIFIED about 1 month ago - at 09/25/2025 07:31PM

Our Engineering team is currently in the process of deploying the fix across the affected systems. This rollout is being done carefully to ensure stability and avoid further impact.

Next update no later than 22:30 CEST.

IDENTIFIED about 1 month ago - at 09/25/2025 06:45PM

Our Engineering team is actively working on deploying a fix.

Next update no later than 20:30 CET.

IDENTIFIED about 1 month ago - at 09/25/2025 06:04PM

Our Engineering team has identified the root cause of the email service disruption. We are working on implementing a fix to restore normal service as quickly as possible..

Next update no later than 19:30 CET.

INVESTIGATING about 1 month ago - at 09/25/2025 05:33PM

We are currently experiencing issues with our mail servers affecting some customers.

Our Engineering team is doing all they can to get our systems back to normal as soon as possible.
No email will be lost because of this issue.

We will keep you updated on the progress and resolution of this issue, first update will be no later than 19:00 CET.

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