async-dnsbl-client

Asynchronous dnsbl client

Install

pip3 install async-dnsbl-client

or

pip3 install git+https://github.com/yaroslaff/async-dnsbl-client

CLI usage:

$ adnsbl.py 117.207.230.178 
dnsbl.sorbs.net
dul.dnsbl.sorbs.net
spam.dnsbl.sorbs.net
zen.spamhaus.org
noptr.spamrats.com
b.barracudacentral.org
web.dnsbl.sorbs.net
pbl.spamhaus.org

# or with hostname
$ bin/adnsbl.py gmail-smtp-in.l.google.com

you may remove some DNSBL from checklist with -r/--remove: -r dnsbl.sorbs.net dul.dnsbl.sorbs.net, or add new DNSBL zones same way with -a/--append.

adnsbl.py exit code is 0 if host isn't blacklisted anywhere, and 1 otherwise.

Usage in your python code

See adnsbl.py sources, it's simple.

import asyncio
import async_dnsbl_client

result = asyncio.run(async_dnsbl_client.dnsbl('gmail-smtp-in.l.google.com'))

Why not adns?

There is already python3 adns support in python3-adns package. But it crashes on ARM machines (such as Raspberri Pi (arch: armv7l) and Oracle Ampere A1 (arch: aarch64)). (maybe you know why?)

>>> import adns
>>> adns.init()
Segmentation fault (core dumped)

on 'normal' amd64 it works fine,

async-dnsbl-client works fine on ARM machines (), checking host in 53 blacklists in 0.127s (fastest).

See also

This project uses aiodns package

pydnsbl - more mature package, looks more powerful, same fast. (But I need my project because sometimes simpler is better)