How to Install Razor/Razor2 on CentOS Web Panel for Postfix/Dovecot ?

Vipul's Razor is a distributed, collaborative, spam detection and filtering network. The primary focus of the system is to identify and disable an email spam before its injection and processing is complete.

Open the following port in your firewall:

TCP 2703 Outgoing : Razor2

Razor Installation

# yum install pyzor perl-Razor-Agent

Create Razor Home Directory

# mkdir /etc/mail/spamassassin/.razor

Enable the Pyzor plugin

# vi /etc/mail/spamassassin/v310.pre
# Razor2 - perform Razor2 message checks.
#
loadplugin Mail::SpamAssassin::Plugin::Razor2

Add the following to /etc/mail/spamassassin/local.cf

# razor
use_razor2 1
razor_config /etc/mail/spamassassin/.razor/razor-agent.conf
score RAZOR2_CHECK 3.000

Restart

# systemctl restart spamassassin

Discover the Razor 

# razor-admin -home=/etc/mail/spamassassin/.razor -register
# razor-admin -home=/etc/mail/spamassassin/.razor -create
# razor-admin -home=/etc/mail/spamassassin/.razor -discover

Define Home Directory, Edit /etc/mail/spamassassin/.razor/razor-agent.conf

#
# Razor2 config file
#
# Autogenerated by Razor-Agents v2.84
# Sat Feb 29 22:19:37 2020
# Non-default values taken from /etc/mail/spamassassin/.razor/razor-agent.conf
#
# see razor-agent.conf(5) man page
#

debuglevel             = 3
identity               = identity
ignorelist             = 0
listfile_catalogue     = servers.catalogue.lst
listfile_discovery     = servers.discovery.lst
listfile_nomination    = servers.nomination.lst
logfile                = razor-agent.log
logic_method           = 4
min_cf                 = ac
razordiscovery         = discovery.razor.cloudmark.com
razorhome              = /etc/mail/spamassassin/.razor
rediscovery_wait       = 172800
report_headers         = 1
turn_off_discovery     = 0
use_engines            = 4,8
whitelist              = razor-whitelist

Razor Test

# spamassassin -t -D razor2 < /usr/share/doc/spamassassin-3.4.0/sample-spam.txt

Check the packages 

# rpm -qa | grep Razor
# rpm -qa | grep pyzor
# rpm -qa | grep DCC

Sourceforge Link:
http://razor.sourceforge.net/download/
https://sourceforge.net/projects/razor/