While the dicussion has deviated from the original topic, I just want to say that the Mail application works well with Brinkster, my hosting provider, and they don't support SSL. I have two email accounts, Work and Personal, configured in the Mail application. However, I am using Windows 8 and this statement applies to that. I will revisit this when my Surface RT arrives on Sunday.
Last point, the setup seems to assume your host supports SSL, and will configure the secure ports. Make sure when you clear the Require SSL checkbox, that you change the port numbers too, i.e., 143 (IMAP) and 25 (SMTP).