Macro
               viruses/malware are application-specific. They infect macro utilities that accompany
               such applications as Microsoft Word (
.doc) and Microsoft Excel
               (
.xls). Therefore, they can be detected in files with
               extensions common to macro capable applications, such as 
.doc,
               
.xls, and 
.ppt. Macro viruses/malware
               travel between data files in the application and can eventually infect hundreds of
               files
               if undeterred.
            
 
            As these file types are often attached to email messages, macro
               viruses/malware spread readily by means of the Internet in email
               attachments.
            
            ScanMail prevents macro
               viruses/malware from infecting your server in the following ways:
            
            
               - 
                  
Detects malicious macro code using heuristic scanning
                  Heuristic
                     scanning is an evaluative method of detecting viruses/malware. This
                     method excels at detecting undiscovered viruses/malware and threats
                     that do not have a known virus signature.
                  
                
               - 
                  
Strips all macro code from scanned files