This outage, which affected user account management functions (e.g. password reset) as well as LionMail access, in fact began at 11:45pm and was fully resolved at 12:02am.
At approximately 11:55pm Monday February 25th a brief interruption of
the CAS login service occurred, affecting LionMail access. After
remedial action, logins to LionMail are successfully occurring. Further
tests are being performed to verify complete resolution to the problem.
CUIT Identity and Access Management Team