- 
                From Inbound undelivered email event notifications in the list Events, click the link Configure alert thresholds.
                A configuration dialog box displays. 
- 
                In the text field, enter the number of connection errors at which to trigger an alert notification.
                The default is 1. The notification is sent at 30-minute intervals after the connections threshold is exceeded. 
- 
                Mark the check box Configure backup destination address to send alerts when the mail server is down.
            
- 
                In the text field, enter up to three email addresses as backup alert email destinations.
                The email addresses must be different from the mail server address. Separate multiple entries with semicolons. 
- 
                Click OK.
                The dialog box closes. 
- 
                From the page Alert Events, click OK. 
                Event alerts are saved.