---
title: "Blacklisting"
url: "https://mailmum.io/tags/blacklisting/"
---

# Blacklisting

- [Howto Block the Spamhaus DROP Lists with ufw](https://mailmum.io/posts/howto-block-spamhaus-drop-lists-with-ufw/): Block the Spamhaus Do Not Route Or Peer (DROP) lists on a Linux server with ufw, ipset, and a small update script that keeps the data fresh.
- [Howto block mailservers using uncommon TLDs in hostname through Postfix](https://mailmum.io/posts/howto-block-mailservers-using-uncommon-tlds-in-hostname-through-postfix/): Block mail servers using uncommon TLDs in their hostname to stop spam/junk, phishing and other unwanted emails.
- [Howto Block Entire TLDs in Postfix](https://mailmum.io/posts/howto-block-entire-tlds-in-postfix/): Block entire TLDs in Postfix mail server to reduce spam, phishing and, other unwanted emails.
- [Monitoring your Local Postfix Blacklist with Munin](https://mailmum.io/posts/monitoring-your-local-postfix-blacklist-with-munin/): Install, setup, and customize the Postfix RBL Munin plugin to monitor public blacklists and your self-built local blacklist. Compare the results visually.
- [Blacklisting Single Hosts, IP Addresses, and even Networks in Postfix](https://mailmum.io/posts/blacklisting-single-hosts-ip-addresses-and-even-networks-in-postfix/): Setup blacklisting single hosts, IP addresses or even whole networks for Postfix. Includes a whitelisting solution.
- [Whitelisting single Hosts, IP Addresses, and even Networks in Postfix](https://mailmum.io/posts/whitelisting-hosts-ip-addresses-and-even-networks-in-postfix/): Whitelist single Hosts, IP addresses, and even networks in Postfix to stop them hitting a blacklist.
- [MailMum Whitepaper](https://mailmum.io/whitepaper/): Whitepaper describing MailMum Services and why it provides so much value to email ecosystem.
- [MailMum Project Started](https://mailmum.io/posts/project-page-started/): MailMum project officially started on 2020-01-03. It was born out of an internal project.