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Postfix and /etc/hosts

The following post is actually a note2self as I stumbled over this problem and wanted to create a reminder for myself and others with similar issues.

Scenario

"master" is the host machine for multiple virtual machines (in my case they are run and managed via "libvirt"). One of these virtual machines is "mail-host" which holds a postfix mailserver. All of the machines are using an externally managed DNS server. The virtual machines are only available to the outside world via NAT. They don't have public IP addresses and therefore aren't known to the external DNS server.

The last point is actually the reason for this post:

How do I configure postfix to forward mails for "example.org" to another server if DNS states that localhost is "example.org"?

Go to "Postfix and /etc/hosts"

Glassfish 4 on Nexus7

As you might have read in my previous blog post I'm currently doing Proof-Of-Concepts on what is possible with Java on a tablet like the Google Nexus7 device meaning a Nvidia Tegra chip which itself is an ARMv7 processor.

Thankfully there is a team at Ubuntu which dedicates its work to bringing a desktop linux to the tablet which supports the well-known standardized Java Runtime Environments out there.

Go to "Glassfish 4 on Nexus7"

Ubuntu and Java on Nexus7

In this blog post I describe how to setup Ubuntu Linux and Oracle Java on my newly acquired Google Nexus7 device. This shall be the foundation to checkout the things you can do with JavaFX on a Tablet computer.

My environment is a Macbook Pro (MBP) running on OS X 10.8 (Mountain Lion). The Nexus 7 (in my case the 16gb version) is attached to the MBP via its USB cable.

Go to "Ubuntu and Java on Nexus7"

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