$ rpm -qv pykolab pykolab-0.8.15-2.1.el7.kolab_16.noarch
This is a fresh CentOS 7 install from http://ftp.rrzn.uni-hannover.de/centos/7.7.1908/isos/x86_64/CentOS-7-x86_64-Minimal-1908.iso
Running sudo setup-kolab from the command line via SSH after switching SELinux to permissive mode as in T978: SELinux **MUST** not be enforcing
Confirm Kolab Service password: ERROR: Can't open /var/log/clamav/freshclam.log in append mode (check permissions!). ERROR: Problem with internal logger (UpdateLogFile = /var/log/clamav/freshclam.log). Job for firstname.lastname@example.org failed because start of the service was attempted too often. See "systemctl status email@example.com" and "journalctl -xe" for details. To force a start use "systemctl reset-failed firstname.lastname@example.org" followed by "systemctl start email@example.com" again. Created symlink from /etc/systemd/system/multi-user.target.wants/amavisd.service to /usr/lib/systemd/system/amavisd.service. Created symlink from /firstname.lastname@example.org to /etc/systemd/system/clamd@.service.
Maybe related to T994: Enable a Kolab Installation to Actually Function
/var/log/clamav does not exist.