The direct option worked a treat; however it seems to having problems sending to Gmail;
Message has permanent errors and will be removed '451 4.5.0 SMTP protocol violation, see RFC 2821. 45si504345wri
2005/11/21 21:46:16 Error Could not complete SMTP transfer. '451 4.5.0 SMTP protocol violation, see RFC 2821. 45si504345wri '
2005/11/21 21:46:16 Information Transferring message 107B26E34FB to gsmtp185.google.com for 'email@example.com'