GreenMail - Open Source suite of lightweight and sand boxed email servers supporting SMTP, POP3 and IMAP. (Github).

Integration Testing IMAP, SMTP and POP3 with GreenMail

How do I send an email in Java?

How do I receive email in Java?

JBoss mail service configuration

JBoss AS 7.2.0 Email Session configurtion - English version

github.com wildfly/quickstart/mail

How to send mails from JBoss Wildfly (JavaMail & GMail)

How to define a JavaMail session using CLI

Docker

How To Install and Use Docker: Getting Started

Getting Started with docker

A Quick Introduction to Docker

Docker and Fedora

docker-wilfly

hpehl/dockerfiles

Deploy Java Apps With Docker = Awesome

Playing with docker on Fedora 20

Deploying Java applications with Docker

Java MongoDB: Get/Save Image using GridFS APIs - How To Do In Java

Create the folder /var/lib/AccountsService/icons/<your_user_name>
The /var/lib/AccountsService/icons/ folders already exist.
Within that folder, place a 96x96 .png file of your choice.

Edit the file /var/lib/AccountsService/users/<your_user_name>
Add the line: Icon=/var/lib/AccountsService/icons/<your_user_name>/<my_picture>.png
 

Source : Change user picture in login manager/Fedora 19 XFCE - FedoraForum.org

Create private/public key

[michael@localhost ~]$ ssh-keygen -t rsa -C michael@example.com

How to Use RSA Key for SSH Authentication

SSH Authentication Refused: Bad Ownership or Modes for Directory

[1.8.1] ChatLog - First mod to 1.8! - Source code available!!

Getting Started with Docker

Docker Cheat Sheet

Automatically Start Containers

Getting Started with systemd

Quartz vs Java EE 7 scheduler

MyManagedScheduledBatchBean.java

Using the Timer Service

Interface TimerService

Task Scheduling in Java EE 6 on GlassFish using the Timer Service

Schedule Java EE 7 Batch Jobs (Tech Tip #36)

Java EE Concurrency API Tutorial

Applying @Alternative Beans and Lifecycle Annotations

Working with Events in CDI

Working with Injection and Qualifiers in CDI

Getting Started with JSF 2.0 and CDI part 3 – Events

Java EE 7: EJB publishing CDI Events that are pushed over WebSocket to browser client

Integrating WebSockets and JMS with CDI Events in Java EE 7

Asynchronous CDI Events

Contexts and Dependency Injection for the Java EE platform [http://docs.jboss.org]