Mailing lists bouncing
It appears that email sent to (CS) mailing lists started bouncing January 24th or 25th. Regular email does not appear to be affected. Missed messages will still be in the archives on the server, but it's possible that the bounces will have caused people to be unsubscribed from the lists depending on the settings, and membership should be verified when things are fixed.
Messages sent to labstaff never got delivered, and the problem went without notice until someone mentioned a missed message.
The VCC has been notified of the problem as of 1/26/2013 at 20:42.
It appears to have only affected the CS mailing lists and should be fixed as of 1/26/2013 at 22:13.