Hi,
I was the one who posted that tutorial.
Thank you for reading it.
Yes, the steps are updated.
The longest steps are those for configuring Rspamd itself. It fits almost like a glove with CWP, only a few adaptations are needed, such as disabling spamassassin, and opendkim, but still offering complete integration with the opendkim installation, using it.
With Rspamd there is the additional advantage that you can use it as an antispam gateway, and an message antivirus gateway for all your servers (if you have more than just one), just by changing a single line in postfix (in /etc/postfix/main.cf):
smtpd_milters = inet:Your-Server-IP:11332
(of course you can use autossh as a secure bridge between one server and another)
Regards,
Netino