Configure Postfix to use Office365 SMTP Relay on Ubuntu 16.04

In this post I’ll show how to install and configure Postfix on Ubuntu 16.04 to use Office 365 services like smarthost/mail relay.

apt-get upgrade
apt-get update
apt-get install postfix sasl2-bin mailutils

sasl2-bin is an API thet implement Cyrus SASL API, and permit to integrate authentication mechanisms in Postfix
mailutils is a simple mail commands that will help testing our configuration. Continue reading

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Docker on Windows 2016 – part 1/2

Docker is a tool that allows to deploy applications software in a “sandbox” (called container) to run on the host operating system (in this case Windows 2016, but also Windows 10 Professional or Enterprise, several Linux versions and MacOsx).

Nowaday the industry standard today is to use virtual machines to run software applications that provide full process isolation.

Att.: Process isolation means that a problem in the host operating system hardly can affect the software running in the guest operating system, and vice-versa.

This isolation, however, comes at great cost because of the computational overhead spent virtualizing hardware for a guest OS.

Containers take a different approach that provide almost the same level of the isolation of virtual machines, but at a fraction of the computing power and using more efficiently the underlying system and resources. Continue reading

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Set Up VNC remote access on Linux Mint 17

VNC remote access allows one to view remotely and interact with real x displays on Linux box (i.e. a display corresponding to a physical monitor, keyboard, and mouse), and using windows, linux, mac or any other operating system SO where exist a vnc viewer.
To access in Linux Mint I prefer x11vnc instead of the default Vino server or other package. Continue reading

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Sql Server 2016: Change SQL Server Collation after installation

I have just finished an installation process of SQL Server 2016, and in post-check I’ve verified that I’ve installed the instance with a wrong collation setting.

In this tip I will explain step by step how to change the server level collation setting for an existing SQL Server instance. Continue reading

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