Alert Mail only when sslcert fails

I am checking the expire date of an SSL certificate. I would like to receive alert mail only when sslcert test fails, but not when https connection test fails.

If aforementioned setting is possible, please let me know how to configure hobbit-alerts.cfg.

Also, I don't want hobbit to repeat the alert mail. I need only one alert for each failure when hobbit detects a problem.