[padraig]

thanks for the post also found extra steps on bugz:

su - zimbra
mkdir /tmp/clamdb
mv /opt/zimbra/clamav/db/* /tmp/clamdb
zmprov ms `zmhostname` +zimbraServiceEnabled antivirus
/opt/zimbra/clamav/bin/freshclam --config-file=/opt/zimbra/conf/freshclam.conf
zmamavisctl stop
zmamavisctl start