problem with amavisd and postfix

[digitalphoto]

greetings,

I can't make amavisd work with postfix. is there a howto somewhere?
problem is, when I comment out the lines on main.cf

--------------------------------------------------
@@@if postfix-enable-virus-scan@@@
#
# Amavis virus scan
#
>>>> #content_filter=smtp-amavis:[127.0.0.1]:10024 <<<<<
@@@else@@@
>>>> #content_filter=kolabfilter <<<<<
@@@endif@@@
--------------------------------------------------

postfix stops working with the following error:

--------------------------------------------------
host 127.0.0.1[127.0.0.1] said: 450
    4.4.1 Can't connect to 127.0.0.1 port 10025, Invalid argument at
    /kolab/sbin/amavisd line 3763, <GEN3> line 53., id=02085-01 (in reply to
    end of DATA command)
--------------------------------------------------

kolab is running on a jail

cheers,

joe karma