I'm getting an error in the Mail settings when trying to set up SMTP.

This is the error I'm getting:

Apache Module mod_ssl is not loaded, SMTP authentication may not be functional

However, I have mod_ssl enabled in my cpanel php settings. Also, when I set it up, it works but the nag message stays.

I would say osclass cannot recognize it.
You can pm me ftp login & ocadmin login and can investigate

I think you're right, it's not recognizing it. Everything's working and mail is getting sent.

@jasongeek
As I told it is just notice, if it would be error, you would have that message in red
It may only impact SMTP authentication, based on my experience it does not work on most of mail servers.