*Update*

Hardware upgrade went as planned, system was back up at 6:15am.

IT Services.
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Previous Description (2014-08-11 16:15:24):

The Exchange on-premise servers will be undergoing a hardware upgrade tomorrow morning, Tuesday August 12th at 6am. Users who are logged into qwa.queensu.ca will be logged off and users who leave their email clients open may be asked for their password to re-log in.

Thank you for your cooperation

IT Services.