Fail2Ban Hardening Guide _Last updated: 2026-01-01 This document is the authoritative, consolidated reference for Fail2Ban on the Mail2 system. It includes configuration, AbuseIPDB integration, R...

Overview This is a recap of commands that I use to troubleshoot. Dovecot Troubleshooting Commands Configuration Checking Commands View current Dovecot configuration: doveconf -n Shows the activ...

Overview Problem Description Repeated DHCP requests from unknown MAC address appearing in dnsmasq logs with the following characteristics: Rapid DHCP ACK/REQUEST cycle (every 2-8 seconds) MAC...

Complete MTA-STS Implementation Guide for Postfix + RSPAMD 3.4 Overview This guide provides a real-world tested approach to implementing MTA-STS (Mail Transfer Agent Strict Transport Security) wi...

While learning Docker and Kubernetes I have looked for different cheat sheets and get tired of the advertisments, etc.. and so here is mine. These were run through AI for formatting and verificatio...

Mealie Kubernetes Configuration Fix - BASE_URL and SMTP Setup Issues Encountered When I deployed Mealie in a Kubernetes environment, I found two common configuration errors which can prevent prop...

Vim Cheat Sheet Here is another cheatsheet for vim which is a bit longer than one page but has no advertisements and downloads in text or PDF format. *Download PDF Cheat sheet | *Download Text Che...

Mealie Kubernetes Deployment with FreeIPA TLS This unified guide walks through deploying Mealie into Kubernetes using: FreeIPA-managed TLS certificates (with certmonger) NGINX Ingress with Me...

🐶 K9s Cheat Sheet I had been looking for a k9’s cheat sheet for a while and have not found any that do not have advertisements, and so here is mine that I had Chatgpt assist in writing. I have also...

Wordpress I brought this over from the old site in case it might help someone else. Problem Statement: I am trying to change the URLs for my WordPress posts to use “post names” instead of “page nu...