Nimda

GFI MailSecurity for Exchange/SMTP is an email security, exploit detection, threats analysis and anti-virus solution that removes all types of email-borne threats before they can affect an organization’s email users. Using 5 virus scanners to scan inbound email, including McAfee, Kaspersky and BitDefender, GFI MailSecurity drastically reduces the average time to obtain virus signatures which combat the latest threats.