I've suddenly started getting e-mails to my account and im not sure where they are coming from.
I'm pretty sure they are virus e-mails but neither plusnet or AVG 7 is picking them up. They are coming in via a domain I do have, but to random addresses that are not used (i.e. the user bit of user @ domain.co.uk). Some of the e-mails are 'from' a hotmail address, others are 'from' the my domain.
Another classic spoofed email situation. Random email accounts on your domain are being used to send out emails and any that go to non-existant email addresses are being bounced back by the mail servers to you with a delivery failure.
The original sent email (possibly containing a virus) is in the attachment so you will only really know by opening it but I would be very causious in doing so.
Nothing you can do about this I'm afraid other than to delete them when they arrive.
It is likely to be Win32/Sober-A or Win32.HLLM.Odin