Delays to university email services

January 6th, 2022

Digital and Technology Services would like to make staff aware that since the start of the new year, delays have been experienced with sending emails to internal and external recipients from university systems, applications and databases.

Delays occurred due to a bug (Y2K22) found on worldwide Microsoft Exchange servers as the year changed to 2022. The bug blocked all email delivery. As a result, this issue has impacted upon our systems such as NottinghamHub (Campus Solutions), BPM, Mobile Print, MailMan and many department, school and research database applications that send email via the university servers.

Senders of emails may have seen a number of ‘Delivery delayed’ reports dating from Saturday 1 January. Many system and application generated emails are currently delayed in substantial queues. As of 11am on Wednesday 5 January, we estimate it will be a further 24 hours before the backlog of email clears and queues return to normal.

In addition, there have also been delays of 24+ hours with emails being delivered from external senders. These delays have now improved, but some short delays may continue to fluctuate.

Further updates can be found on the IT Status page.

We apologise for any inconvenience caused with these email delays.

Update 11am, 06/01/22

We can confirm that all queues of emails have now been successfully processed. All delayed emails will now have been delivered to recipients.

All inbound and outbound email has returned to normal operation and there should be no further issues when sending emails from university mailboxes, systems, applications or databases.

If you do experience any further issues or have any questions, please contact the IT Service Desk. We apologise again for any inconvenience caused during this incident.

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