hacks

Dovecot vpopmail-auth driver removal. Migrating to the SQL driver

Those who are still using the Dovecot's vpopmail auth driver should consider a migration to another backend, as on January 4, 2021 dovecot-2.3.13 was released and the vpopmail auth driver removed (more info here). I'll show below how to support domain aliases...

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 Browse the scripts' folder A common use of the LXC containers is to isolate services like sql, ftp, httpd, mail etc. in an host...

Converting a Linux installation to a Slackware one in an OVH Kimsufi server

This article explains how to convert a given Linux distribution to a Slackware one in an OVH kimsufi server. It is inspired by the Slackware wiki page Install Slackware on an online.net Dedibox BareMetal Server, which explains the same for a Dedibox...

Denying bad DNS HELO/EHLOs

The RFC-821 Section 3.5 states that  The sender-SMTP MUST ensure that the <domain> parameter in a HELO command is a valid principal host domain name for the client host. As a result, the receiver-SMTP will not have to perform MX resolution on...

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