Intermittent email issues

The University is currently experiencing intermittent problems with email.

University Technology Services is investigating the issue and will advise when services is fully restored.


Issues include:

• Email sender receives error message: “554 5.0.0 Service unavailable error ”

Action: resend the email, report the issue to

• Email seems to be sent, (appears in sender’s sent folder, no error message) but never arrives at the recipient

Action: Confirm that email was not received, report the issue to

If you have any questions please contact UTS Service Desk at or 905-525-9140 ext 2HELP (24357)