How many poller cycles must be down before it will send an alert. After an alert is sent, in order for a 'Site Recovering' Email to be send, it must also be up this number of poller cycles.
A problem occurred somewhere in the SSL/TLS handshake. You really want the error buffer and read the message there as it pinpoints the problem slightly more. Could be certificates (file formats, paths, permissions), passwords, and others.