Issue in new installed CWP

[kelyiu3000]

I installed CWP in Centos 7 using minimal install option in VM with 2core and 4GB RAM.
After installation, I found that ClamAV, AMaViS and SpamAssassin both are in unknown status.

Here is the description when I click into the status button on the dashboard.

clamd.service - clamd scanner () daemon
   Loaded: loaded (/usr/lib/systemd/system/clamd.service; static; vendor preset: disabled)
   Active: inactive (dead)

amavisd.service - Amavisd-new is an interface between MTA and content checkers.
   Loaded: loaded (/usr/lib/systemd/system/amavisd.service; disabled; vendor preset: disabled)
   Active: inactive (dead)
     Docs: http://www.ijs.si/software/amavisd/#doc

spamassassin.service - Spamassassin daemon
   Loaded: loaded (/usr/lib/systemd/system/spamassassin.service; disabled; vendor preset: disabled)
   Active: inactive (dead)

After restart the service manually, they both will work.
But reboot the os, it will become unknown status again.

Please advise how I can fix this issue.

[Administrator]

to enable it on the system start use this command

Code Select Expand

systemctl enable spamassassin.service
systemctl enable amavisd.service