Just a suggestion, but contact Virgin's help desk and ask their advice on how to forward these e-mails. Perhaps the e-mail bounced because of a setting in your e-mail software, or something to do with the outgoing server.
Ideally they can use the information from such a report to advise other users and/or contact the originating ISP so that the spamming/phishing can be halted. I use SpamCop to report all e-mails like these, and although I can't say it ever completely stops, the volume of dodgy e-mails does go down.