This paper describes an experiemental system that is being presented as a possible solution to the problem of malicious viruses being propagated through email. The system works by installing a client software on the email servers and having a central MET server. The email servers running the clients collect information about emails with attachments, analyze it, and if necessary, based on the fact of whether it is believed to be a malicious attachment or not, sends the information to the MET server which makes the final decision of whether the attachment is malicious or not by comparing results with other submissions sent by other email servers. 8 - accept 4 - reject