If you are reading this you problebly already knew what is Xpenology. I havn’t had a chance to try it. Recently jun released the Xpenology bootloader 1.02b for DSM 6.1. I tried it on my ESXi 6.5 and found it works quite well so I am going to try it on a bare metal PC.

To setup the Xpenology NAS, the first thing you need to do is making the bootloader onto an USB stick so your NAS will boot from it. Then it will guide you to install the DSM 6.1.

There are lots tutorials on how to makethe USB bootloader from a Windows PC. The process is simple but still needs you to get on Windows and download/install few programs to have the job done. We all know that Xpenology is based on Linux system, so why not just make the bootloader on Linux?

Here I’ll show you how to make the bootloader from Ubuntu. For this we need:

1. A computer with Ubuntu installed. (Other Linux OS should also works.)
2. An USB drive

OK, Let’s start!

A reader Remo Mattei commented on my article about a Virtual Alias Domain issue. He got the Postfix 550 “Recipient address rejected: User unknown in virtual mailbox table;” error in maillog.

Since I don’t need this feature in my current setup, so it got ignored when I built and tested my mail system few months ago. After reading some documents online I managed get this work.

I have an Asterisk server at home I built few years ago. It has an old Intel atom processor running on CentOS 6. It works quite well. I have couple SIP trunks to severial ITSP, including Google Voice. The Asterisk is version 11 LTS and it is a vinilla installation.

The current Asterisk LTS version is 13 and it come with support of PJSIP. I never had a chance to learn PJSIP configuration. And I just happen to have a Raspberry Pi 3 on hand. So I think I should give a try.

UPDATE 2016-09-07

Google has a new release of Google Earth on Aug. 25 2016 which make the installation on Ubuntu so much easier. No more fix and work-around needed! (Thanks Martin posted this great news.)

So I tried it on Ubuntu 16.04.1 and it just works.

For new installation, download the .deb file from Google, then simply run

sudo apt-get install lsb-core
sudo dpkg -i google-earth-stable_current_amd64.deb

If you have the previous version of GE installed, then remove it first:

sudo dpkg -P google-earth-stable
sudo rm -rf /opt/google/earth/free

After this you should get a working Google Earth version 7.1.7.2600

The following is my old post back in April and I keep it here just for references.

Ubuntu 16.04 LTS (Xenial Xerus) just released last week. I was testing it and had trouble to install Google Earth on it just like previous version of Ubuntu.

My system is 64 bit Ubuntu 16.04. The big problem is Ubuntu missing all the “lsb-*” packages which Google Earth depend on. After few hours trial-and-error, finally I have the Google Earth running normally on my notebook.

So I have my mail server up and running and that a good news. The bad news is that the server need lots more to do, some even will become nerver-ending processes.
I cannot cover every single details here because every system has its unique setup and requirement. But here I list few things you may keep an eye on them.

家里的公网IP地址有时会变化，这使得我的某些依赖域名的服务（网站，VPN，rsync备份等）随之陷入瘫痪。原来我是在我的路由器上用免费的DDNS功能，但这种免费服务一般不能使用自己的域名，又或者必须将域名迁移到DDNS的服务商那里。总之很是不爽。

在V2EX看到很多人推荐，我把域名也转到了Namesilo。 （拜拜了，狗带！）Namesilo不仅价格合理，而且我发现竟然还有API接口支持！惊喜之后上网搜索有关Namesilo的DDNS方案，不料大失所望！只发现有在WINDOWS的POWERSHELL下的一个方案。

好吧，那就自己动手解决吧。

Roundcube is a free opensource web-based IMAP email client. It provides full functionality you expect from an email client, including MIME support, address book, folder manipulation, message searching and spell checking. At the time of this writing, Roundcube just released v1.1.5.

Both SPF and DKIM has two parts: One is the DNS records for SPF/DKIM serve the purpose of setting your own policy for others to check. The other is to check if the incoming mail message is in accordance with the SPF/DKIM that is set by the admins of the domain from which the message was sent.

I use MailScanner to scan emails for viruses, spam, phishing, malware, and other attacks against security vulnerabilities. Under the hood, MailScanner uses ClamAV(clamd) for virus scan, and uses Spamassassin to scan for spams.

MailWatch is the web UI frontend to manage MailScanner. I can manage qurantine and generate reports easily right in the web browser.

Postfix is the mail transfer agent (MTA) that routes and delivers email. Dovecot is the IMAP and POP3 server. The two works together make a perfect email server.