I have the same problem since after rebuilt the postfix.

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Found the solution by myself.

Make sure the /var/lib/clamav & /var/log/clamav with the right user & group.

chown -R clam:clam /var/lib/clamav
chown -R clam:clam /var/log/clamav

Open the file /etc/freshclam.conf and make sure the lines are set to as below:

DatabaseDirectory /var/lib/clamav
DatabaseOwner clam

Also make sure the lines at file /etc/clamd.conf been set to:

DatabaseDirectory /var/lib/clamav
User clam

Then, restart the clamd service and update the database.

service clamd restart
freshclam

source : http://forum.centos-webpanel.com/centos-6-problems/clamav-update-problem/

Posted on: August 11, 2017, by : Julian's | 20 views