It appears that the email configuration within collaboration server only allows "smtps" as the protocol. When I change it to smtp, leave the page, and come back, it changes back to smtps. It's unclear which protocol is actually being "tested" when I try to send a test email. Is there a configuration file somewhere that I can change to set this? For that matter - in going through the logs, it appears that collaboration server keeps trying to use port 465 regardless of the setting as well.