Well mgmcc you may have hit the nail! I have his netbook at home and connected via my Virgin BBand. Are you saying that if all the settings are correct, when I return the netbook and logon at his address it should work?
Yes, if the settings are correct, mail should send OK when connected to the internet via Orange. At the moment, while connected with your Virgin service, you would need to send mail using Virgin's SMTP server, even if retrieving mail from Orange's POP3 server and regardless of the address used in outgoing messages.