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

Pyzor is a collaborative, networked system to detect and block spam using digests of messages.Using Pyzor client a short digest is generated that is likely to uniquely identify the email message. This digest is thensent to a Pyzor server to:

• Check the number of times it has been reported as spam or whitelisted as not-spam
• Report the message as spam
• Whitelist the message as not-spam

Since the entire system is released under the GPL, people are free to host their own independent servers. There is,however, a well-maintained and actively used public server available (courtesy of SpamExperts) at:

public.pyzor.org:24441

Open the following port in your firewall:
UDP 24441 Outgoing : Pyzor
TCP 24441 Incoming : Pyzor

Pyzor RPM Sources:
1. ftp://mirror.switch.ch/pool/4/mirror/fedora/linux/releases/22/Everything/x86_64/os/Packages/p/pyzor-0.5.0-10.fc21.noarch.rpm [This will not work ]
2. http://209.132.181.8/pub/archive/fedora/linux/releases/22/Everything/x86_64/os/Packages/p/pyzor-0.5.0-10.fc21.noarch.rpm [ Use This ]
Pyzor Installation

# rpm -Uvh http://209.132.181.8/pub/archive/fedora/linux/releases/22/Everything/x86_64/os/Packages/p/pyzor-0.5.0-10.fc21.noarch.rpm

Enable the Pyzor plugin

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

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

# pyzor
use_pyzor 1
pyzor_options --homedir /etc/mail/spamassassin/.pyzor
pyzor_path /usr/bin/pyzor
score PYZOR_CHECK 3.000

N.B: You can use header to Pyzor: add_header all Pyzor _PYZOR_ 
Discover the Pyzor Home Directory

# pyzor --homedir /etc/mail/spamassassin/.pyzor discover
  downloading servers from http://pyzor.sourceforge.net/cgi-bin/inform-servers-0-3-x

Restart

# systemctl restart spamassassin

Test

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

Pyzor RPM Source:
http://209.132.181.8/pub/archive/fedora/linux/releases/22/Everything/x86_64/os/Packages/p/
Pyzor Documentation : 

https://readthedocs.org/projects/pyzor/downloads/pdf/latest/
Sourceforge : 

https://sourceforge.net/projects/pyzor/
GitHub : 

https://github.com/SpamExperts/pyzor
Bug:

https://bugzilla.redhat.com/show_bug.cgi?id=1288853

Pyzor Updated Configuration for MailScanner with MailWatch on CentOS 7 for CWP7.Pro

# pyzor
use_pyzor 1
pyzor_options --homedir /etc/mail/spamassassin/.pyzor
pyzor_path /usr/bin/pyzor
add_header all Pyzor _PYZOR_
score PYZOR_CHECK 3.000 

Pyzor RPM Package DownLoad Link

Email Server – Enable SpamAssassin site wide with add-ons Razor, Pyzor and DCC | Cloud Work Solutions (cloudwrk.com)