https://github.com/nigelhorne/blocking-milter

Stop Spam
https://github.com/nigelhorne/blocking-milter

milter perl spam-detection spam-filtering spam-prevention spam-protection

Last synced: 3 months ago
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Stop Spam

• Host: GitHub
• URL: https://github.com/nigelhorne/blocking-milter
• Owner: nigelhorne
• License: gpl-2.0
• Created: 2025-01-27T15:52:33.000Z (8 months ago)
• Default Branch: master
• Last Pushed: 2025-02-17T13:41:30.000Z (8 months ago)
• Last Synced: 2025-03-27T20:43:15.949Z (6 months ago)
• Topics: milter, perl, spam-detection, spam-filtering, spam-prevention, spam-protection
• Language: Perl
• Homepage:
• Size: 25.4 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# blocking-milter

## Overview

Sendmail filter designed to detect and reject spam emails based on specific blacklisted phrases in the email subject and body.

It integrates with Sendmail or Postfix using `Sendmail::PMilter` and logs rejected messages via syslog.

The filter allows connections from private IPs while scanning incoming emails for spam-related keywords,

rejecting those that match,

and returning a 554 5.7.1 error.

## Installation

In `/etc/mail/sendmail.mc`:

    INPUT_MAIL_FILTER(`blocking-milter', `S=local:/run/blocking-milter.sock, T=S:30s;R:3m')dnl

In `/etc/rc.local`:

	rm -f /run/blocking-milter

	/usr/local/etc/blocking-milter local:/run/blocking-milter&

Or put this is in `/etc/systemd/system/blocking-milter.service`:

    [Unit]

    Description=Block SEO, and similar, spams

    After=network.target

 

    [Service]

    ExecStart=/usr/local/etc/blocking-milter local:/run/blocking-milter

    KillMode=process

    Restart=on-failure

    [Install]

    WantedBy=multi-user.target

Rebuild sendmail:

    m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf

    service sendmail restart