The outbound e-mail server that scans messages for spam and viruses became unresponsive at approximately 10:23 PM on Wednesday. Services were restored around 11:52 PM. During the outage, all messages sent by users were queued on the RMail system and delivered after services were restored.
The problem seems to be hardware related and further investigation is taking place.
We apologize for the inconvenience.
-Computing and Communications Services