Playing with qmail-spp
qmail-spp provides plug-in support for qmail-smtpd. It allows you to write external programs and use them to check SMTP command argument validity. The plug-in can trigger several actions, like denying a command with an error message, logging data, adding a header...
Migrating from Linux-VServer to LXC (Slackware)
Tired of the nightmares of remotely compiling the kernel with Linux-VServer, a software that I'm pleased with despite of some lack of documentation, these days I was playing with LXC, which is included and supported by Slackware and for which the Linux...
How to backup a server with rsync via ssh login without password
Rsync is a fast and extraordinarily versatile file copying tool. It can copy locally, to/from another host over any remote shell, or to/from a remote rsync daemon.It offers a large number of options that control every aspect of its behavior and...
Server Name Indication (SNI) for qmail and dovecot
Server Name Indication (SNI) is a TLS extension that enables a server to present different certificates based on the hostname requested by the client during the TLS handshake. In modern email environments, multiple domains frequently share the same IP address for SMTP,...
Denying bad DNS HELO/EHLOs
[If you followed the 'quick configuration' based on the config-all script, this feature was already configured for you at that time with the default settings.] Changelog Jan 8, 2026 (v. 10.0.1)- dropped PCRE dependency Feb 9, 2025- clang compat- dropped I and V options Aug...
daemontools
More info here: http://cr.yp.to/daemontools.html Original author: D.J. Bernstein github version: 0.83 daemontools is a collection of tools for managing UNIX services. It monitors qmail services and saves error messages to one or more logs. Changelog Jan 5, 2026 (v0.83)This release doesn't add any new feature nor fixes...
Wrapper scripts for LXC unprivileged containers
Index Part 1: Introduction Part 2: Basic configuration files Part 3: Creating an unprivileged container on Slackware Part 4: Scripts overview Part 5: Natting example Part 6: Migrating to Slackware-current - LXC-7 - cgroup2 Browse the scripts' folder Changelog A common use of the LXC containers is to isolate services like...
Converting a Linux installation to Slackware in an OVHcloud server
This article explains how to convert a given Linux distribution to a Slackware one in an OVHcloud server. I wrote in the past an article about doing the same for OVH kimsufi. It is inspired by the Slackware wiki page Install Slackware...
