RSC does not send alerts for all RSC events; check that the alert you are expecting is an event for which RSC sends alerts.
Log in to the server as root and use the command rscadm send_event -c message to send an alert.
If email alerts are not received:
Check email configuration variables.
Check that the mail server and backup mail server are up and configured properly.
Try sending an email message to the recipients without using RSC.
Check Ethernet configuration.
If pager alerts are not received:
Check pager configuration variables.
Try sending a pager message by some method other than RSC.
Check with your pager service for proper pager configuration, or problems with the paging service.