Hello,
ClamAV filter should be used when clamd service is configured to use network mode (TCP):
name = "AV:ClamAV"
address = "inet://127.0.0.1:3310"
and ClamAV-local when clamd service is configured to use local mode (Local socket)
name = "ClamAV-local"
address = "local:///var/run/clamav/clamd.ctl"
Regards