Mail function supposed to work with SSL authentication?

[pedwik]

SMF version: 2.0.14
PHP version: 7.1.9 64 bit
OS: Windows Server 2016 (IIS 10)
I have problems with getting the mail function to work (SSL). On the same server we also have a MediaWiki and MantisBT bugtracker, which are also PHP, and for those services it works. For MediaWiki we use the extension SwiftMailer, for MantisBT we use the built-in mailer function they include with the installation (I am uncertain of what it is exactly). We do not have the PHPMailer extension installed in our PHP-installation, is that required for the mai function to work in SMF?

I have selected SMTP as mail method.

[pedwik]

Adding "ssl://" before the mailserver url solved the problem.