Ubuntu

installing oracle jdk 8 and openjdk 11 on ubuntu 18.04 18.10

How To Install Oracle Java 8 and OpenJDK 11 on Ubuntu 18.04, 19.04

November 27, 2018 Xiao Guoan (Admin)

This tutorial is going to show you how to install Oracle Java 8 and OpenJDK 11 on Ubuntu 18.04/Ubuntu 19.04.…

could not get lock var lib dpkg lock

Fix “could not get lock /var/lib/dpkg/lock” Error Once and For All (Ubuntu)

November 21, 2018 Xiao Guoan (Admin)

The “could not get lock /var/lib/dpkg/lock” error is pretty common in Debian/Ubuntu running in virtual machine. Existing workarounds on the…

nginx tls 1.3 ubuntu openssl

How to Easily Enable TLS 1.3 in Nginx on Ubuntu 19.04, 18.04, 16.04

November 14, 2018 Xiao Guoan (Admin)

In a previous article, I explained the steps of compiling Nginx source code with OpenSSL 1.1.1 in order to enable…

ocserv client certificate authentication

How to Set up Certificate Authentication in OpenConnect VPN Server (ocserv)

November 10, 2018 Xiao Guoan (Admin)

CentOS, Debian, Redhat, Ubuntu

This tutorial will be showing you how to set up certificate authentication in OpenConnect VPN server (ocserv) on Debian/Ubuntu/CentOS/RHEL. OpenConnect…

host multiple domains in Modoboa mail server

How to Host Multiple Domains in Modoboa Mail Server

November 6, 2018 Xiao Guoan (Admin)

This tutorial will be showing you how to set up multiple email domains (virtual hosting) with Modoboa, which is an…

host multiple email domains with iredmail

How to Host Multiple Mail Domains in iRedMail with Nginx

November 3, 2018 Xiao Guoan (Admin)

This tutorial will be showing you how to set up multiple email domains (virtual hosting) with iRedMail, which is an…

iredadmin ubuntu

How to Easily Set Up a Full-Featured Mail Server on Ubuntu 18.04 with iRedMail

November 3, 2018 Xiao Guoan (Admin)

Setting up your own email server on Linux from scratch is a pain in the butt, if you are not…

no-domain-under-control-iredadmin

How to Fix No Domain Under Control Error in iRedMail

November 3, 2018 Xiao Guoan (Admin)

While I’m setting up a mail server on Ubuntu 18.04 with iRedMail 0.9.8, I encountered the “No domain under control”…

modoboa login

How to Quickly Set up a Mail Server on Ubuntu 18.04 with Modoboa

October 24, 2018 Xiao Guoan (Admin)

This tutorial is going to show you how to quickly set up your own email server on Ubuntu 18.04 with…

install-mailtrain-on-ubuntu-18.04-step-by-step

Installing Mailtrain on Ubuntu 18.04 Server Without Docker

October 17, 2018 Xiao Guoan (Admin)

This tutorial will show you how to install Mailtrain on Ubuntu 18.04 without Docker. Mailtrain is an open-source self-hosted newsletter…

postfix relay domains

How to Set up a Backup Email Server with Postfix on Ubuntu (Complete Guide)

October 16, 2018 Xiao Guoan (Admin)

This tutorial will be showing you how to set up a backup email server with Postfix on Ubuntu. A backup…

spam test result

How to Set up Postfix SMTP Relay on Ubuntu with Mailjet

October 9, 2018 Xiao Guoan (Admin)

This tutorial is going to show you how to set up Postfix SMTP relay with Mailjet on Ubuntu. Postfix is…

6 best postfix spam filter

7 Effective Tips for Blocking Email Spam with Postfix SMTP Server

September 24, 2018 Xiao Guoan (Admin)

In this tutorial, I’d like to share with you my 7 tips for blocking email spam with Postfix SMTP server.…

nginx tls 1.3 ubuntu openssl

How To Enable TLS 1.3 in Nginx on Ubuntu 18.04 and 16.04

September 22, 2018 Xiao Guoan (Admin)

HTTPS just got faster and safer thanks to the release of TLS 1.3 by IETF (RFC 8446) in August 2018.…

ubuntu 18.04 unattended upgrades email notification

Setting up Automatic Security Update (Unattended Upgrades) on Ubuntu 18.04

September 17, 2018 Xiao Guoan (Admin)

This tutorial is going to show you how to set up automatic security update, aka unattended upgrades, on Ubuntu 18.04.…

install plex media server ubuntu 18.04 linux

How to Install Plex Media Server on Ubuntu 18.04 LTS Server or Desktop

September 14, 2018 Xiao Guoan (Admin)

This tutorial will be showing you how to install Plex media server on Ubuntu 18.04 LTS server/desktop. Plex is a…

rss2email gmail

How to Install and Use rss2email on Ubuntu 18.04

September 10, 2018 Xiao Guoan (Admin)

This tutorial will be showing you how to install and use rss2email on Ubuntu 18.04. Rss2email is an open-source program…

ubuntu 18.04 lamp server

How to Install LAMP Stack on Ubuntu 18.04 Server/Desktop

September 8, 2018 Xiao Guoan (Admin)

This tutorial is going to show you how to install LAMP stack on Ubuntu 18.04 LTS. A software stack is…

qbittorrent remote webui

How to Install qBittorrent on Ubuntu 18.04 Desktop or Server

August 29, 2018 Xiao Guoan (Admin)

This tutorial will be showing you how to install qBittorrent on Ubuntu 18.04. qBittorrent is a free, open-source, fast and…