Outage in Cornerstone

Email Issues for UK Swimlanes

Resolved Minor
July 21, 2025 - Started about 1 month ago - Lasted 18 days
Official incident page

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Outage Details

The UK region's production, pilot, and stage swimlanes are currently experiencing some issues with the email server resulting in email delivery failures. This is our top priority and we are working closely with the vendor to resolve the problem as soon as possible. Please check back periodically for additional updates, which will be posted as they become available.
Latest Updates ( sorted recent to last )
RESOLVED 13 days ago - at 08/08/2025 07:38PM

After an extended period of monitoring, this incident is now considered resolved. That said, our efforts do not stop here. We’ve implemented enhanced, around-the-clock monitoring alerts to proactively detect potential issues. In parallel, we continue working closely with customers to improve email hygiene practices and are actively enhancing our email infrastructure and application to help safeguard against similar incidents in the future. A full RCA will be shared next week.

MONITORING 22 days ago - at 07/31/2025 01:13AM

Email delivery continues to flow successfully, and we are closely monitoring activity to ensure sustained stability.

MONITORING 28 days ago - at 07/24/2025 05:42PM

Emails are flowing successfully again. Microsoft lifted the throttling limitation and the queues have cleared. We will continue closely monitoring activity to ensure stability. Please also refer to the related Known Issue page, "Known Issue: Email Issues for UK Swimlanes" ( https://cornerstoneondemand.my.site.com/s/articles/Known-Issue-Email-Issues-for-UK-Swimlanes ) for additional details.

IDENTIFIED 28 days ago - at 07/24/2025 03:53PM

We are continuing to work closely with Microsoft to address the email delivery delays. We will continue to share regular updates until this is resolved. This is our top priority. We appreciate your continued patience.

IDENTIFIED 28 days ago - at 07/24/2025 01:24PM

We are continuing to work closely with the vendor to resolve the problem as soon as possible. Please check back periodically for additional updates, which will be posted as they become available.

IDENTIFIED 28 days ago - at 07/24/2025 10:58AM

While the overall email delivery service for the UK region's production, pilot, and stage swimlanes customers remain unimpacted, customers sending emails specifically to the Microsoft Email Domains, may experience some issues with the email deliveries. We are closely working with the Microsoft Teams to address the email delivery delay issues.

Please also refer to the related Known Issue page, "Known Issue: Email Issues for UK Swimlanes" ( https://cornerstoneondemand.my.site.com/s/articles/Known-Issue-Email-Issues-for-UK-Swimlanes ) for additional details.

This is our top priority and we are working closely with the vendor to resolve the problem as soon as possible. Please check back periodically for additional updates, which will be posted as they become available.

MONITORING about 1 month ago - at 07/22/2025 04:57PM

We are continuing to monitor for any further issues.

MONITORING about 1 month ago - at 07/22/2025 03:32PM

Email delivery is now restored and any newly triggered emails are being delivered successfully. We will continue closely monitoring activity to ensure stability. Please also refer to the related Known Issue page, "Known Issue: Email Issues for UK Swimlanes" ( https://cornerstoneondemand.my.site.com/s/articles/Known-Issue-Email-Issues-for-UK-Swimlanes ) for additional details.

IDENTIFIED about 1 month ago - at 07/22/2025 12:10PM

We are continuing to investigate this issue as our top priority and will continue to share regular updates until it is fully resolved. Thank you for your continued patience and understanding.

IDENTIFIED about 1 month ago - at 07/22/2025 06:47AM

We are continuing to investigate this issue as our top priority and will continue to share regular updates until it is fully resolved. Thank you for your continued patience and understanding.

IDENTIFIED about 1 month ago - at 07/22/2025 04:10AM

We are continuing to investigate this issue as our top priority and will continue to share regular updates until it is fully resolved. Thank you for your continued patience and understanding.

IDENTIFIED about 1 month ago - at 07/22/2025 02:19AM

We are continuing to investigate this issue as our top priority and will continue to share regular updates until it is fully resolved. Thank you for your continued patience and understanding.

IDENTIFIED about 1 month ago - at 07/22/2025 12:06AM

The UK region's production, pilot, and stage swimlanes are currently experiencing some issues with the email server resulting in email delivery failures. This is our top priority and we are working closely with the vendor to resolve the problem as soon as possible. Please check back periodically for additional updates, which will be posted as they become available.

Latest Cornerstone outages

Login Issues LAX SL4 - 24 days ago
Email Issues for UK Swimlanes - about 1 month ago

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