The server name still says smtp.tormail.org. Like I said, you need to change it to the onion domain. Also, are you using the browser bundle to supply your Tor instance? If so, I think I know what's wrong. The Mac and Linux versions of the browser bundle use a random Socks port other than 9050. You need to force it to use port 9050. onion icon in system tray -> Settings -> Advanced -> uncheck "Configure control port automatically" DO NOT change the ControlPort to 9050. Leave it at 9051. The ControlPort is different from the SocksPort. Restart the browser bundle and the SocksPort will be 9050. Configure Thunderbird with all the settings exactly as they are written on the TorMail Help instructions, EXCEPT change Socks4 to Socks5. Let me know if that worked.