This processing rule launches the SMS 2003 Monitor SMS Inbox script on a schedule to monitor the number of files in an SMS inbox. An event is raised by the script when the number of files exceeds a specified threshold. The threshold value is specified as a parameter to the script through this rule. The schedule and threshold value should be tuned for the target environment. Note, monitoring files in an inbox can have a performance impact on the site server so select values for the minimum possible requirement. The sooner an increasing backlog is detected the less impact for both monitoring and the site server.