Aleksjes Okolovskis aokolovskis

Based on https://controlc.de/2013/09/10/debian-selbstgehosteter-dyndns-dienst/ and https://github.com/Josef-Friedrich/dyndns

For debian 10

apt install -y bind9 bind9-host bind9utils dnsutils unattended-upgrades vim

echo unattended-upgrades unattended-upgrades/enable_auto_updates boolean true | debconf-set-selections
dpkg-reconfigure -f noninteractive unattended-upgrades

Let's Encrypt / Dovecot / Postfix / UFW firewall / Certbot

This tutorial describes how to install TLS to a mail server consisting of Postfix and/or Dovecot by using Let's Encrypt certificates with automatic renewing and firewall management.

The system used for this tutorial was:

$ lsb_release -idrc
Distributor ID: Ubuntu

	#include <unistd.h>
	#include <CoreServices/CoreServices.h>
	#include <ApplicationServices/ApplicationServices.h>

	typedef int CGSConnection;
	extern OSStatus CGSGetWorkspace(const CGSConnection cid, int *workspace);
	extern OSStatus CGSSetWorkspace(const CGSConnection cid, int workspace);
	extern CGSConnection _CGSDefaultConnection(void);

	int get_space_id(void);