For pykolab/setup/setup_mta.py:

• See if /lib/systemd/system/clamd@.service exists.
• Read it in using SafeConfigParser.
• Determine if a section [Install] exists.
• If it does not, write out /etc/systemd/system/clamd@.service with an added [Install] section (WantedBy=multi-user.target should do it).

Do this before issuing a systemctl start clamd@amavisd and/or systemctl enable clamd@amavisd.

Distributions that use systemd but do not have the problem for ClamAV may need to be treated separate.