Google Groups as a Spam Vector
Introduction If you’re operating a modern mail system and rely on technologies like SPF, DKIM, and DMARC, you...
Zero Trust PKI Made Simple with EasyRSA
Introduction Zero Trust is no longer just a buzzword – it is a security principle that fundamentally changes...
Modern and lightweight Wiki.js
When it comes to self-hosted wiki platforms, MediaWiki has been a solid and proven solution for many years....
Securing your secrets: Deploy Passbolt
In today’s digital landscape, organizations are increasingly dependent on cloud-based tools to manage credentials and sensitive data. While...
Building a central Ansible Control Node
Managing multiple servers or virtual machines can quickly become overwhelming. An Ansible Control Node gives you a central...
Why I rely on Netcup for my VPS infrastructure
What Makes Netcup Special I’ve been running my VPS infrastructure with Netcup, based in Karlsruhe, for a long...
Checkmk RAW Edition Monitoring
Checkmk is a powerful IT monitoring solution originally developed by Mathias Kettner. Today, it is maintained by Checkmk...
Expunge old mails by folder and age in Dovecot
Keeping mailboxes lean is essential for performance and storage management on self-hosted email servers. Over time, folders like...
Quick and complete Maildir usage summary
Managing Maildir mailboxes across multiple users can quickly become a challenge. How do you find out who’s using...