More and more internet access providers are closing port 25 to reduce spam except for connections to their own mail servers. If you run your own email server and have problems connecting to it on port 25, you can enable port 465 (SMTPS) in postfix as a workaround. Edit the /etc/postfix/master.cf file: nano /etc/postfix/master.cf and …
How to enable port 465 (smtps) in postfix mailserver Read More »
In February of this year the Multipass team took on a challenge: completely overhauling our documentation. Canonical has put a renewed emphasis on documentation in recent months, led by Daniele Procida and his Diataxis framework, and we wanted to be an early adopter of this methodology. We had no idea where to start, but fortunately …
Multipass documentation: proudly a work in progress Read More »
Along with the usual bug fixing, maintenance, and upstream version enablement work that goes into every Charmed Ceph release, we also worked on a number of new features in this cycle. Stand-alone NFS shares In Ceph, you can use CephFS for your network file share needs, but sometimes there are applications or use cases that …
What’s new in Charmed Ceph with Ceph Quincy on Ubuntu 22.04 LTS? Read More »
Chown is a command on Linux that is used in order to change the owner of a set of files or directories. In this guide, we will discuss how to Chown recursively on Linux server. Chown comes with multiple options and it is often used to change the group owning the file. However, in some …
Welcome to the Ubuntu Weekly Newsletter, Issue 741 for the week of June 19 – 25, 2022. The full version of this issue is available here. In this issue we cover: First Kinetic Kudu test rebuild Ubuntu Stats Hot in Support LoCo Events Call for testing: ubuntu-frame version 69-mir2.8.0 Current status of LightDM Other Community …
Photo by Gabriel Heinzer on Unsplash Canonical Ubuntu 22.04 LTS is the latest long term support release of Ubuntu, one of the world’s most popular Linux distributions. As a Long Term Support release, Ubuntu 22.04 LTS will be supported for 10 years, receiving both extended security updates and kernel livepatching via an Ubuntu Advantage subscription …
If you want to create QT-based applications without complications you will want to install the Qt Design Studio tool on Linux. Qt Design Studio is a user interface design and development tool that allows designers and developers to quickly create prototypes and develop complex interfaces. Qt Design Studio offers an ideal workflow for prototyping and …
How to install the Qt Design Studio tool on Linux Read More »
As part of their fundamental, security-driven design, snaps are meant to run isolated from the underlying system. In most cases, the idea works well, and granular access to system resources using the mechanism of interfaces allows snap developers to ship their applications packaged with strict confinement. However, there are some scenarios where even the liberal …
The new classic confinement in snaps – Even the classics need a change Read More »
How important security is for your application and digital services? “Very important”, this is the answer we get the most often from Product Managers and Executives. Nobody wants the malware to take advantage of the vulnerabilities of their applications. However, any access point to the internet can be an entry point for hackers. Considering the …
The software operator is a design pattern. Its design is based on successful applications where this approach was found useful. In other words, it’s a proven approach that can be recommended to others. But like all approaches, it’s important to understand their advantages disadvantages. Software developers need to understand when the application of this pattern …
The software operator design pattern: advantages – part 4 Read More »
