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Outage in Nexcess

ClamAV Service Disruption

Resolved Major
March 16, 2026 - Started 11 days ago - Lasted 2 days
Official incident page

Incident Report

Summary AI Generated

The ClamAV service experienced disruption due to a problematic signature update that caused clamd restart failures. This affected Maldet scans and potentially caused mail delivery failures when the ClamAV service was not running. The issue was resolved by the System Engineering team within 12 minutes.

We are currently investigating an issue affecting the ClamAV service, where clamd restarts may fail due to a problematic signature update. Our System Engineering team is actively working to identify the root cause and implement a fix. This issue may affect Maldet scans and cause mail delivery failures if the ClamAV service is not running.
Components affected
Nexcess Email

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Latest Updates ( sorted recent to last )
RESOLVED 9 days ago - at 03/18/2026 12:41PM

We have not observed any further issues since implementing the fix. The environment remains stable.


If you have any questions or concerns. You can reach us through the following channels:

Live Chat: https://my.nexcess.net/
Email: support@nexcess.net

MONITORING 11 days ago - at 03/16/2026 08:18PM

Our engineering team has implemented a fix to address the issue affecting the ClamAV service. The invalid signature entry has been removed and services have been restored.

We are continuing to monitor the environment to ensure stability and will provide further updates if needed.

IDENTIFIED 11 days ago - at 03/16/2026 08:18PM

Our engineering team has implemented a fix to address the issue affecting the ClamAV service. The invalid signature entry has been removed and services have been restored.

We are continuing to monitor the environment to ensure stability and will provide further updates if needed.

IDENTIFIED 11 days ago - at 03/16/2026 06:05PM

We have identified the cause of the issue affecting the ClamAV service. A recent malware signature update introduced an invalid entry in the ClamAV signature database, which can prevent the clamd service from restarting successfully.

Our team is currently applying a signature database refresh on affected servers to remove the invalid entry and restore normal operation of the ClamAV service.

We are currently applying this fix across all affected servers and will provide another update once the process is completed.

INVESTIGATING 11 days ago - at 03/16/2026 05:26PM

We are currently investigating an issue affecting the ClamAV service, where clamd restarts may fail due to a problematic signature update. Our System Engineering team is actively working to identify the root cause and implement a fix.

This issue may affect Maldet scans and cause mail delivery failures if the ClamAV service is not running.

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