Postfix sender\recipient restrictions plugin (pypolicer)

This is a standalone software that performs policing based on rules, that stored in config file or database

Currently supported databases:

• RethinkDB

What is supported:

• Blacklist\whitelist plugin
• Basic address check (for RFC-compilance, but Unicode is not supported yet, sorry)
• Blocking delivery based on global config settings
• Collecting statistics
• Config live-reload

Installations

prerequirements:

• Make a virtualenv
• Install rethinkDB from https://www.rethinkdb.com/docs/install/
• Clone this repository via git
• Install requirements.txt pip install -r requirements.txt

Sample config file policer.conf has commentary, that explains every setting. Please check it before starting a daemon!

Edit postfix main.cf and add this line: smtpd_recipient_restrictions = check_policy_service { inet:127.0.0.1:16000, timeout=10s, default_action=DUNNO}, permit

By default policer server listening on 127.0.0.1:16000, but it can be altered via command line arguments or config file.

Run software in daemon mode with: python -m policer start -c policer.conf

Stop daemon with: python -m policer stop

For help: python -m policer -h

Documentation

Generate via sphinx from docstrings: - To be documented

Hosted version: https://lain.im/policer/policer.html

Warning

This is not actively maintained project. Basically I developed it for one task, we need to perform on my work. It was worth one blog post about postfix and milters(but currently I have no time for it, maybe later).

Anyway, milters are more capable of limiting and filtering by content, but this approach is simplier.