Incident Date: October 28, 2021
Incident Number: PR-2521
On October 28, 2021, at 11:27 PM ET, Tucows’ hosted email platform experienced service interruption impacting POP/IMAP/Webmail for Prod A.
The service interruption was caused due to a kernel bug on the affected network storage device causing high load on the system.
At 11:42 PM ET, The engineering team restarted the affected system to restore the services.
On October 29, 2021, at 12:25 AM ET, Another service interruption was observed and lasted for 21 minutes due to the same kernel systems bug.
At 12:46 AM ET, the engineering team performed a restart of the affected network storage devices to stabilize the hosted email environment.
Tucows is in the process of investigating the cause and develop a plan to roll out a permanent solution to address the identified systems bug.
Tucows is committed to continue with the hosted email migration efforts into the new cloud to maintain a scalable and stable hosted email environment.
Tucows Engineering Team