Configuration - Mail Settings

[escopecz]

If I google your error message, I get this result: Sending email using php, gmail, and swiftmailer causes SSL-related error - Stack Overflow

Did your php support SSL ? PHP: fsockopen - Manual, and check PHP: Installation - Manual for reference.

Create a page with

phpinfo();
Is SSL enabled?

Can you try that? It must be your server settings if the issue happens for every provider.