As of today, I've suddenly started receiving duplicate emails whenever I send an email message. It's exactly like I've bcc'd myself - except I haven't!
I've checked all my Virgin webmail settings (all correct), and have also gone into Setttings > Forwarding and POP/IMAP and selected "Enable POP for all messages that arrive from now on". I've also checked all my settings in Outlook, and they are exactly as they should be.
None of this makes any difference - I'm still getting a duplicate email arriving in my Inbox for every outbound message I send.