You can use any Web browser to examine the Logs. Click the Logs
button in the Monitor section and the list of the stored Logs appears.
The current Log is marked
with an asterisk sign, while other Logs are marked with checkboxes.
You should have the "Can Monitor" access right to view the
The options on the top of the page allow you to specify when the Logs
files are created and deleted:
|Start New Every:
|or if Larger than:
|Delete Old in:
A new file is created automatically every day (at midnight), or more
often, as you specify with the first option. Additionally, a new Log file is
created if the current Log file size exceeds the specified limit. Shortly
after a new Log file is created, the Server checks all files in the SystemLogs
directory, and removes all files that are older than specified in the third
You can select one or several logs in the list and then remove them using
the Delete All Selected Logs button. The active (current) Log file cannot
If there are too many Log files on the Server, you can enter a string
in the Filter field and click the Display button: only the Logs with names
matching the Filter string will be displayed:
Click the Log file name to open the selected Log.
When the Log appears in your browser window, all Log records are displayed.
Since Logs can have thousands of them, you may want to view only a portion
of the Log. Interrupt the Log downloading process and specify the Log Level
and the Time Range options:
Only the records with time stamps in the specified interval are displayed.
Note: if you are viewing the current Log and specify "*"
in the second field, all records placed in the Log by this moment are displayed.
Note: if you are viewing the current Log and specify some future
time in the second field, the Server will keep the browser channel open,
sending new Log records as they are placed in the Log. The channel is closed
either when the specified time comes, or when the Server starts a new Log.
Since the System Logs can be very big (several megabytes of data) on
a heavily loaded server or on a server with low-level logging enabled,
it is difficult to examine the entire Log.
You can set the Level setting to suppress displaying records
that are more detailed than the specified value (have a higher level tag),
and you can put a filter into the Filter field. Click the Display
button to display only the records that contain the specified substring.
- One of your users complains that sometimes his mailer application cannot
retrieve messages from your server properly and it displays an error message
about some protocol faults.
- Since it does not occur often, you should run the POP module with its
Log Level set to Low-Level, and this will make the System Log very big.
Finally, the client contacts you and says that the mailer has displayed
the same error.
- You open the Log and set the Level to 3 (Problems). Now you may see
all the problems with the POP module that occurred today. You find the
record that indicates the problem your client is talking about, and that
record has a tag POP-2357. So, you type POP-2357 into the Filter
field, and change the Log Level to 5 (All Info). As a result, you see a
clean log of that particular POP session.