Windows 7: Getting Email Spam from the same domain

Hey everyone.

I sent this email for a friend from my email address because they don't have email. Now I'm getting spam everyday but gmail is not picking it up as spam. The email address is always different, the content is different and the subject is different. By using the filters in gmail I managed to get it down to 10 emails per day. The email seems to have my name and surname which i never included in the email so I thought maybe my account is hacked and I changed the password but no difference.

I checked the email details in thunderbird and found that the source is always the same domain. Is there anyway to filter it or block it? It really annoying because this is my professional email account where I handle all my professional and business work. I've thought of just creating a new account but all my clients know this email address and all the networking contacts I've giving this email address. If it was spamming my personal account i wouldn't be bothered.



Any ideas or help?