Install Pyzor for Postfix/Dovecot Spam Filtering along with SpamAssassin

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:

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public.pyzor.org:24441Open 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

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# 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

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# 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

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# pyzor
use_pyzor 1
pyzor_options --homedir /etc/mail/spamassassin/.pyzor
pyzor_path /usr/bin/pyzor
score PYZOR_CHECK 3.000
Discover the Pyzor Home Directory

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

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# systemctl restart spamassassinTest

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


Original Article : https://www.awsmonster.com/2020/03/how-to-install-pyzor-on-centos-web.html