How can I update ClamAV myself?
You may update the dlls and exe files (C:\Programs\Common Files\JAM Software\ClamAV) of ClamAV yourself by getting them from theClamWin (https://www.clamwin.com/ )project. But we do not give any support for this. It may cause no virus to be detected or any mail/file be detected as virus. We once had thins situation when ClamWin changed some interfaces which did not result in error, just in such a strange behavior.
Hint: The virus signature files used by ClamAV are located in:
C:\Documentsand Settings\All Users\Application Data\JAM Software\ClamAV
and are updated automatically at least every 3 hours.