MailEnable Professional Guide
Testing Antivirus Configuration
Message Filtering > Antivirus filtering > Testing Antivirus Configuration

The antivirus filter can be tested by emailing the Eicar test virus through the system. This test virus can be downloaded from http://www.eicar.com. To perform more advanced testing and debugging, follow the details in this article - http://www.mailenable.com/kb/viewarticle.asp?aid=85