• Introducing RSPAMD
  • How RSPAMD blocks SPAM
  • What about “Straight to Blacklist”!!!???
  • Configuring RSPAMD
  • Setting up the Regex Mapping Rules
  • Rejecting Email or Domain for RSPAMD
  • Instantly blacklisted — No questions asked!
  • Undoing blacklisting
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Category: Infrastructure

Server, DevOps, and technical infrastructure

Blocking SPAM via RSPAMD
Blog / Infrastructure · 16 August 2025

Blocking Email Spam Faster with RSPAMD — Instant Domain Blacklisting

How to configure RSPAMD for instant email and domain blacklisting — setting up regex multimap rules, a Docker-compatible block script, and why blocking at the mail server level matters more than client-side filtering.

Busy networking diagram showing the DNS server
Blog / Infrastructure · 15 June 2025

IPv4 vs IPv6 DNS: Which Takes Precedence and How to Configure Both

A practical guide to DNS configuration across IPv4 and IPv6 — how they interact, which takes precedence on Windows 11 and Linux, and how to set up DNSMasq with a floating virtual IP for reliable dual-stack resolution on a self-hosted infrastructure.

web secuirty
Blog / Infrastructure · 27 April 2024

Time to lock down Website Certificates

Recently I wrote an article on why you should lock down your website certificates. Oddly, has been around since late 2013 and not very well know, although recently has been …

email-sending
Blog / Infrastructure · 21 December 2023

Linux Email Services

I must say it is pretty exciting with the Linux based open source solutions that are directed at solving Email Services problems: aka – SMTP + IMAP + POP3 + …

Recent Posts

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  • snapWONDERS Launches Vaultify — An AI-Powered Platform for Hiding Files Invisibly Inside Photos and Videos, Dedicated to the Memory of Huey

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