Blocking email address that contains www-data

Hi,

I am getting spam which comes in this email format: www-data@vps.terminodaselva.com.br, www-data@cp.comvontade.com.br, www-data@host.manterdistancia.com.br, www-data@server.carinhosdela.com.br .... I get 100 of these everyday and the domain keeps on changing. I would like to know whether there is a way to block this, I was thinking of discarding all email address which contains www-data. Please help.