How can i remove email policy server, spamassassin and mail scanner from my cyberpanel server

Happy New Year @Xdigit

To remove mail scanner

chmod +x /usr/local/CyberCP/CPScripts/mailscanneruninstaller.sh
/usr/local/CyberCP/CPScripts/mailscanneruninstaller.sh

To remove spamassassin on ubuntu

apt-get -y autoremove --purge spamassassin

To remove spamassassin on centos/almalinux

Run the commands line by line for centos/almalinux/ubuntu

vi /etc/postfix/master.cf || nano /etc/postfix/master.cf

remove this line

smtp inet n - n - - smtpd -o content_filter=spamassassin

and replace it with

# add below line 
smtp inet  n -  n  - - smtpd

Remove the following code which is at the end of the file /etc/postfix/master.cf:

spamassassin unix - n n - - pipe flags=R user=spamd argv=/usr/bin/spamc -e /usr/sbin/sendmail -oi -f ${sender} ${recipient}

Also serach for these lines in /etc/postfix/main.cf and delete them

smtpd_milters = inet:127.0.0.1:8891
non_smtpd_milters = $smtpd_milters
milter_default_action = accept

Finally, restart Postfix:

service postfix restart