Strange. We got it working in beta, see my settings attached. Note that because BT Internet use YAHOO for email, I'm able to send via. the Yahoo SMTP server.
A couple of questions:
1. What O/S - I'm guessing from your sig. Win7 64-bit.
2. Can you check in your Radarbox main folder, do you see these DLLs - libeay32.dll, libssl32.dll, ssleay32.dll
Other than that, check your password, etc. I also notice that the button text on your preference box is corrupted - maybe your ANRB installation is corrupted?