During the investigation of another issue on the Kolab Now front-end servers, email delivery was broken on one (of many) frontend server. This caused delivered emails to be queued on an internal MX server for a group of users. When the issue was discovered, it was quickly resolved, and emails were again distributed to the user inboxes.
The queuing of emails started at 2024-11-22@21:56 UTC and lasted until 2024-11-23@15:02. Emails were delayed – not dropped. No emails were lost. All emails have been delivered at this time.
Monitoring has been put in place detecting this and similar delivery issues going forward.
We apologize for any inconvenience that this may have caused.
