RESOLVED: Email delivery issues – April 27 and 28

Wednesday, May 2, 2018

RESOLVED: On May 2, IST contacted the users who were impacted by the April 27-28 email delivery issue and have identified and resolved the root cause of this issue.

Questions? Please contact the IST Service Desk, helpdesk@uwaterloo.ca or ext. 44357.


What is happening? During the below timeframe there were issues that affected email delivery to @uwaterloo.ca accounts, or through @uwaterloo.ca. Examples include:

  • Automated systems on campus sending to students (@edu.uwaterloo.ca)
  • Campus people sending email off campus (through mailservices)
  • Campus people sending email to other campus people (but not both on connect)

When is it happening? Friday, April 27 at 3:45 p.m. until 2:45 p.m. on Saturday, April 28.

What was the impact? Several emails were not delivered and senders were not alerted of the failure.

Next steps: IST continues to investigate the cause of this issue. In the meantime, IST will advise affected users of the messages that failed to send. A copy of these email messages may be in the user’s Sent folder and can be sent again. This is not the case for automated systems as they typically do not retain sent messages. 

Questions or concerns? Please contact the IST Service Desk, helpdesk@uwaterloo.ca or ext. 44357.

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