How can I connect my SMTP server to my Action Flow modules?

Hi all,

I am trying to use the e-mail module in Action Flow and I need to add a connection using my SMTP server.

These are the configurations that I should fill but when I fill these configurations, it gives me an error like that :

Is there anything that I should do before filling these configurations or in general how can I use my SMTP server in my Action Flows?

Thank you,

Ugurcan