*Update*

The issue has been resolved. We apologize for any inconvenience.
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Previous Description (2016-02-19 09:43:31):

Live WebPublish sites as well as the Authoring environment are currently unavailable. Visitors to live WebPublish sites will receive this notification: http://www.queensu.ca/its/apps/notices/service_outage.php

ITS is working to determine the cause of the problem and updates will follow when we have more information.