Hi there,
I installed the clamav plugin without any troubles. I tested it by sending the eicar test virus string from another account (same machine) and it worked great.
Now I tested it by sending an E-Mail (same mail, eicar test virus string in subject and body) from my gmx mail account. The clamav log told me it is clean and passed the mail.
Is this a configuration problem? (already run clamav but not milter on this machine)