Our CEO is reporting "not an authorized user" errors when attempting to log into OWA (Exchange 2007). Most of our organization is restricted from logging into the network between 11:00PM and 6:00AM 7 days a week.
However, a handful (including the CEO) have no restirctions on login hours (Managed by user through AD - Account Tab, Logon Hours button). Other users (including myself) who are not restricted have no problem logging in during the typical restricted time (11PM - 6AM).
There is no Group Policy managing the Logon hours. Any other ideas on what could be causing this? Thanks in advance for your input!