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Critical alerts on SBS 2003

I get a Server Performace Report every day and i noticed this Critical Alert and have no idea what it means:

Critical Alerts

There were no critical alerts on the server in the last 24 hours.


Critical Errors in Application Log

Source      Event ID      Last Occurrence      Total Occurrences
   MSExchangeAL
8331      6/10/2010 5:44 AM      1,423 *
The service threw an unexpected exception which was caught at f:\titanium\dsa\src\lra\abv_dg\lservagent.cpp(4511) For more information, click http://www.microsoft.com/contentredirect.asp.



* The text shown is for the most recent occurrence of this event. For more information, see the Event log.
Comment
Watch Question

MSExchangeAL... Exchange address list. It means there was a problem encountered by the Recipient Update Service while building the Global Address List (GAL).

You can attempt to re-run it manually:

1 Open Exchange System Manager then Expand Recipients, Offline Address Book.
2 Right click on the default and choose Rebuild.

Author

Commented:
I performed those steps and that erroe went away here is what i am getting now... it looks like 3 errors.

Thanks


Auto-started Services Not Running

Service Name
Performance Logs and Alerts
   Total auto-started services not running: 1

In normal conditions, these services should be running. For details, it is recommended that you review errors in the Event log related to the service.





Critical Errors in Application Log

Source      Event ID      Last Occurrence      Total Occurrences
   MSExchangeAL
8331      6/13/2010 5:44 AM      324 *
The service threw an unexpected exception which was caught at f:\titanium\dsa\src\lra\abv_dg\lservagent.cpp(4511) For more information, click http://www.microsoft.com/contentredirect.asp.




Critical Errors in System Log

Source      Event ID      Last Occurrence      Total Occurrences
   TermServDevices
1111      6/12/2010 12:15 PM      3 *
Driver Microsoft XPS Document Writer required for printer Microsoft XPS Document Writer is unknown. Contact the administrator to install the driver before you log in again.


* The text shown is for the most recent occurrence of this event. For more information, see the Event log.
Performance Logs and Alerts-
Safe to ignore this one, if it has no job to do the service automatically shuts down.

TermServDevices -
Safe to ignore these as well related to printers. During your RDP connection an attempt is made to map your current printers and when it can't it tosses this error.

MSExchangeAL -
How often does the error occur in the event logs?

Also.. What service pack level is your Exchange?