Cannot send emails, fails to use correct TLS

I can receive emails. But when I try to set my SMTP settings (which is 465 STARTLS force) I don’t get an error but I do have the following in the logs.

6:07:37 PM <email> [SMTP] MailClient.Accounts.ConnectionException: Connection failed due to the following reason: 
               "The handshake failed due to an unexpected packet format."
            ---> System.IO.IOException: The handshake failed due to an unexpected packet format.

First thing to try, change the security policy associated with port 465. It should be Use SSL/TLS on special port (legacy).

If that still does not work, keep that setting, but completely disable your anti-virus/firewall or VPN application and try again.

Hello I have tried that setting and don’t have any anti-virus or firewall or VPN in use. When I try to send an email under those settings I get the following error:

I know that 465 is the correct port because that is the port I have configured on my phone’s email client.