i have succeeded in resolving the above problem..
simply i have copied the
in /etc folder
so overwriting the actual /etc/amavisd.conf
(that seems not configured by ispconfig, but used !)
now the clamav problem is gone away..
pls, tell me if i have made the right thing..
however i wonder where it is written in ispconfig configuration
which "amavisd.conf" file to use
cause i think it have to be somewhat corrected