This all started today.

I was checking my e-mails and blocking all the spam, when all the sudden a spammers e-mail (VeryCheapNewSoftw@www.thompenoglarsen.dk) said "This email address cannot be blocked". I would like to find a solution to this as I would like to keep my boxes clean.

From:VeryCheapNewSoftw@www.thompenoglarsen.dk
To:restaurant@www.thompenoglarsen.dk
*SPAM*

I did a little research and www.thompenoglarsen.dk is a restaurant's website.
I also got an IP: 87.238.248.110


Any help would be greatly appreciated!