SYNAQ Cloudmail Mail Delays - 20-06-2016
Incident Report for SYNAQ

Summary and Impact to Customers

On Monday 20th June from 11:01 – 14:30, SYNAQ Securemail experienced an inbound mail delivery incident.

The resultant impact of the event was the delay of approximately 15 minutes of inbound mail.

Root cause and Solution

The root cause of this event was due to an incompatibility between the database server kernel and newly installed server firmware. The new firmware caused a kernel bug that triggered a reboot of the database server, thus making the server temporarily inaccessible. Consequently, a backlog in the mail queues was created, causing an inbound mail delay of approximately 15 minutes.

In order to resolve this issue, our engineers failed over the affected mail query load to the slave database server. This caused the mail query load to revert back to processing efficiently so that the backlog of mails could be delivered. In addition, we identified that the kernel bug created by the new firmware was due to an incompatibility with the existing kernel version and we thus upgraded the kernel to the latest version.

Remediation Actions

Implement a control to ensure that all database server components are reviewed for firmware compatibility before conducting new upgrades.

Posted 11 months ago. Nov 07, 2016 - 16:59 CAT

This issue has been resolved. We apologize for any inconvenience this may have caused.
Posted over 1 year ago. Jun 20, 2016 - 14:30 CAT
There is currently a minor delay of up to 15 minutes on SYNAQ CloudMail affecting certain mails. The issue has been identified and the team is working on a resolution.
Posted over 1 year ago. Jun 20, 2016 - 11:01 CAT
This incident affected: SYNAQ Cloud Mail.