The "System Log" link on the Admin page shows the log entries of the system, reverse chronologically sorted with most recent first (see Figure below).
Figure: System Log.
Each line in the log contains a time stamp, the log priority, the system component and the log entry itself.
Note
System logs are available via the web interface only on Linux / Unix systems. On Windows systems, you can see the logs using a text editor and opening the file [install_dir]otrs\var\log\otrs.log.