**VIRUS** from Directory Returned mail: see transcript for details

[kunts@xxxxxxxxxx]

Dear user linux-xfs@xxxxxxxxxxx,

Your account was used to send a huge amount of junk email messages during the 
last week.
Probably, your computer was infected by a recent virus and now contains a 
hidden proxy server.

Please follow instruction in order to keep your computer safe.

Have a nice day,
oss.sgi.com user support team.

Kerio WinRoute Firewall email scanner found a virus in the following attachment:
        Name:   oss.sgi.com.zip
        Content type:   application/octet-stream
Additional information from antivirus: McAfee verdict: Generic Malware.a!zip
        
The attachment has been removed.