You must configure the EMAIL_ADDRESS property so that ssctuner messages are emailed to the appropriate person, even when the message is not logged into the system.
~# svccfg -s ssctuner setprop ssctuner_vars/EMAIL_ADDRESS="my_name@mycorp.com"
# svcadm restart ssctuner
If you changed a property using incorrect syntax, the service does not come back. If this happens, identify the offending property that you must fix.
# grep -i parameter /var/svc/log/site-application-sysadmin-ssctuner:default.log
After making any corrections or changes, repeat Step 3.