Living as expat in Shuangjing Beijing

I currently live at the north border of Shuangjing, my apartment is close to the Gaomao CBD, Beijing’s Central Business District and the CCTV building which is located in that area. The building is designed by the Dutch architect Rem Koolhaas something the Dutch can be proud of because its one of the most prominent new buildings in Beijing.

Shuangjing is a comfortable residential area just outside Beijing’s crowded Central Business District Chaoyang. Shuangjing is a sub-district, and has been rapidly developed as modern apartment buildings have risen to the horizon and give it a crowded skyline. Shuangjing has its own very crowded subway station on line 10. On the busiest day it handled a peak entry and exit traffic of 100.000 people. Don’t expect ever a seat on the subway.

Shuangjing has a lot of expatriate-friendly housing, and a lot of foreign restaurants, grocery stores, cafes, bars, particularly around Shuangjing subway station.


The main reasons for me as an expatriate to live in Shuangjing:

  • Its proximity to downtown and the CBD
  • A less hustle-and-bustle feel than the more crowded downtown
  • Less expensive rents than are available in the CBD
  • Plenty of Western-style housing, restaurants, shopping, and my favorite bar Bang!Bang!
  • The apartments are relatively new in this area as I don’t recommend renting something older than 7 years in China.
  • My conclusion: Shuangjing is a good middle ground which is not as crazy as the Sanlitun area and not as family orientated as Shunyi or Lido.

Alive Octopus for dinner

Sometimes sales is easy sometimes you have to bite the bullet, by eating alive octopus during a business trip. The Korean’s call it Sannakji, eating a fresh-cut octopus while the suction cups of the octopus are still moving. The word nakji stands for octopus. Eating this dish is not so much about taste as its more about mouth sensation while feeling the cups moving in you mouth and sucking to your tongue or other parts of the inside of you mouth. This dish i have eaten in the famous fish-market restaurant area in Mazan South Korea.  On the web there are also several reports about the danger of choking, this is only the case in my opinion when you put large amounts in your mouth at one time.

Featured image thanks to: Kirk K






Integrating email in PHP applications on Ubuntu server with Amazon SES

Most of the things on the internet got easier over the years. One aspect that became more difficult is integrating sending email from Linux servers or PHP hosting applications. In the past you could easily fill out the SMTP credentials from an email provider but due to 2 tier authentication and other layers of security it becomes more difficult to integrate your Gmail, Yahoo or any other email providers account. Also the internet service providers are blocking ports and become more strict in the usage of sending emails due to spam control. Another reason for using SES is that there is no need to fill out SMTP credentials in web applications, also if something goes wrong your SES account will be blocked but you still maintain access to your email account.

This tutorial describes a way how to set up a perfect mail relay system for an Ubuntu server. Let’s list the ingredients first:

When you feel familiar with the topics above than this setup will be a breeze if not do some further investigation to the links above.

Amazon AWS

In 2006, Amazon Web Services (AWS) began offering IT infrastructure services to businesses in the form of web services — now commonly known as cloud computing. With the Cloud, you can instantly spin up hundreds or thousands of servers in minutes and deliver results faster.

Today, Amazon Web Services provides a highly reliable, scale-able, low-cost infrastructure platform in the cloud that powers hundreds of thousands of businesses in 190 countries around the world. With data center locations in the U.S., Europe, Brazil, Singapore, Japan, and Australia.

Ubuntu Server

The leading platform for scale-out computing, Ubuntu Server helps you make the most of your infrastructure. Whether you want to deploy an OpenStack cloud, a Hadoop cluster or a 50,000-node render farm, Ubuntu Server delivers the best value scale-out performance available.

Amazon AWS SES

Amazon SES stands for Simple Email Service. Amazon SES is an outbound-only email-sending service that provides an easy, cost-effective way for you to send email. You can use Amazon SES to send marketing emails such as special offers, transactional emails from PHP applications such as order confirmations, and other types of correspondence such as newsletters or get emails from a Linux server about the status. As always with Amazon you only pay for what you use. The pricing in October 2014 is 10 cents per 1000 emails. In addition you pay data out transfer which is probably around 1 cent per GB.

Other companies that deliver similar email relay services are, Luxsci Smarthost, SMTP email delivered, AuthSMTP.

PHP websites

A lot of websites in the world are built on PHP to name a few popular ones: Facebook, Yahoo, Wikipedia and WordPress and when you are running your own website like this WordPress website you probably want some email interaction with your website.


When running your own Linux server for example Ubuntu LTS 14 or 12 you like to get some feedback from it to know if everything is running smooth. You can do this via the command line but when you don’t use the command line everyday a browser based system such as Webmin is more convenient. Webmin is a web-based interface for system administration for Unix. Using the popular browsers Chrome or Firefox, you can set up user accounts, Apache, DNS, file sharing and so on your Linux box.


Sendmail is the software that makes it possible to sent an email in a Linux environment. Sendmail is a general purpose internet work email routing facility that supports many kinds of mail-transfer and delivery methods, including the Simple Mail Transfer Protocol (SMTP) used for email transport over the Internet. Two other good open source choices are Postfix and Exim.

Setup SES in Amazon AWS

So far the introduction of the ingredients, from now I assume you have your Amazon AWS account setup, you have an Ubuntu server running as EC2 instance, Virtual Machine or an old computer with Ubuntu in your home. I further assume you have access the domain name records at your domain name registration provider since we have to add a few. If you have your website running at a hosting provider like Hostgator, Bluehost, Godaddy, iPage, JustHost or Hub webhosting club you can use this tutorial for some inspiration. Before we start with the configuration of the server and the server software we first setup Amazon SES. It’s pretty easy just a few screenshots to guide you.

First thing you want to do, is apply for production access, otherwise you can only play around in the sandbox


2. Create your SMTP credentials


3. Verify a new domain, this is the domain you want to use for sending email, this can be different from you internet domain name.


4. After verifying you will get TXT record and CNAME records which you need to copy into DNS records at you hosting company your domain name registrar or use a service provider like CloudFlare.AWS SES 6

You will receive some emails from Amazon when the setup is completed.

Software installation and configuration

Start up shell access to your server and install Sendmail:

sudo apt-get install sendmail

The next step you only have to do when you don’t use a fully qualified domain name (FQDN) such as In this example I use the hostname maripositas

The next step take some extra care make a mistake and you lose connection to your sever. Edit your host file:

sudo nano /etc/hosts

add the following bold line to the configuration which probably looks something like this    localhost    maripositas.localhost maripositas

# The following lines are desirable for IPv6 capable hosts

::1     ip6-localhost ip6-loopback

fe00::0 ip6-localnet

ff00::0 ip6-mcastprefix

ff02::1 ip6-allnodes

ff02::2 ip6-allrouters

if you have a fully qualified domain name then it probably looks like this: localhost

# The following lines are desirable for IPv6 capable hosts

::1 ip6-localhost ip6-loopback

fe00::0 ip6-localnet

ff00::0 ip6-mcastprefix

ff02::1 ip6-allnodes

ff02::2 ip6-allrouters

ff02::3 ip6-allhosts

Note for a system with a permanent IP address the could also be replaced with the permanent IP address for more reading check out source 1 and source 2. (source 1 and source 2).

Restart the network so the new host configuration will be loaded:

sudo /etc/init.d/networking restart

Now we are going to configure Sendmail to send email through the Amazon SES endpoint you have three options here:

  1. (Ireland)
  2. (Oregon)
  3. (Virginia)
sudo nano /etc/mail/authinfo

add the following text to the file: "U:root" "I:USERNAME" "P:PASSWORD" "M:PLAIN"

Change USERNAME to the Amazon credentials you go from the Amazon AWS website when you created the SMTP credentials. Change PASSWORD to the Amazon credentials as well.

The LOGIN i have set to PLAIN, if you like you can use the more secure DIGEST-MD5 but than you have to convert the password.

Save the authinfo file

Type the following command to generate /etc/mail/authinfo.db:

sudo makemap hash /etc/mail/authinfo.db < /etc/mail/authinfo

Open the /etc/mail/access file and include support for relaying to the Amazon SES SMTP endpoint by adding the following line.

sudo nano /etc/mail/access

Move to line 69 were you find

# Client Connection rate (and #) control

Connect:localhost        RELAY RELAY

and add the bold line check you use the correct region which you earlier setup.

Type the following command to regenerate /etc/mail/access.db:

sudo makemap hash /etc/mail/access.db < /etc/mail/access

If you like back-up copy of /etc/mail/ and /etc/mail/

Add the following group of lines to the /etc/mail/ file before any MAILER() definitions. If you add a FEATURE() line after a MAILER() definition, when you run m4 in a later step, you will get the following error: "ERROR: FEATURE() should be before MAILER().":

Important be sure to use the ` character and the apostrophe exactly as shown.

define(`SMART_HOST', `')dnl
define(`RELAY_MAILER_ARGS', `TCP $h 25')dnl
FEATURE(`authinfo', `hash -o /etc/mail/authinfo.db')dnl

Change Smart_Host to the correct region settings region

Masquerade_as should be the domain name were you want to sent the emails through, By adding this masquerade, you are making email from this host appear to be sent from your domain. Otherwise, the email will appear as if the email is being sent from the host name of the mail server, and you may get an “Email address not verified” error when you try to send an email.

Run the following commands:

sudo chmod 666 /etc/mail/
sudo m4 /etc/mail/ > /etc/mail/
sudo chmod 644 /etc/mail/
sudo /etc/init.d/sendmail restart

Send a test email by doing the following, you can only do this test if you have done the complete registration procedure at Amazon SES.

sudo /usr/sbin/sendmail -f

Press enter

hello world

Press ctrl+D

You should now be able to receive emails to the account you have sent the message to if any problems check the log file: /var/log/mail.log

Sendmail must now be fully functional we have to configure the php.ini files to let Apache know how it can sent email:

Edit (uncomment) the php.ini files in Ubuntu so they match the files below:

 sudo nano /etc/php5/apache2/php.ini
; For Unix only.  You may supply arguments as well (default: "sendmail -t -i").
sendmail_path = "/usr/sbin/sendmail -t -f -i"
sudo nano /etc/php5/cli/php.ini
; For Unix only.  You may supply arguments as well (default: "sendmail -t -i").
sendmail_path = "/usr/sbin/sendmail -t -f -i"

Further more you can do a quick test in your Webmin environment:

Go to Webmin menu, Webmin configuration files, on the next page click sending email:

webmin send email

I hope this helps in setting up a good and stable email relay system for your Linux server. When you find any mistakes drop a comment.

Hoogendoorn announces global expansion into Asia, new office in Beijing

Official opening Hoogendoorn Asia:
China: Hoogendoorn announces global expansion into Asia, new office in Beijing

Hoogendoorn officially opened its new office in Beijing. The opening was held at the Dutch Embassy in China on the 23rd of April 2014. Approximately 180 invitees were present at the reception. Together with Hoogendoorn’s CEO Martin van Gogh, Export Director Martin Helmich and Managing Director of Hoogendoorn Asia Erik van Berkum, Hoogendoorn Asia was officially opened. For this occasion an ice sculpture in the shape of Hoogendoorn Asia’s logo was poured with red wine. The speech was held by Export Director Martin Helmich.

Hoogendoorn Asia opening
This new office represents the expansion of the company in response to customer demand in the rapidly growing market. With this step, Hoogendoorn confirms its position as a key supplier to the worldwide horticultural market. As Hoogendoorn is represented in all continents, it enables doing business across multiple time zones, in different languages and with a strong cultural adaptability.

Closer to its customers

The decision to open a new office in China allows Hoogendoorn to provide a local presence in the Asian market: there is always a specialist available who is well aware of the local climate and business circumstances. This way, recommendations and solutions can be fully aligned with customer’s requirements. Even the software language can be set to user’s wishes. Martin Helmich, Export Director Hoogendoorn: “Hoogendoorn provides user-friendly software in the Chinese language. This allows customers to use the functionalities optimally in order to achieve higher production.” In addition Hoogendoorn also provides local maintenance service, technical support and training.

Boosting horticultural technology in China

The opening of the Asian office has been enthusiastically received by other Dutch horticultural suppliers. “This new office will give a boost to the use of Hoogendoorn’s horticultural technology, contributing to a more innovative and sustainable development of greenhouse horticulture in China and Asia”, said Agricultural Counsellor Marinus Overheul. 

Erik van Berkum, Managing Director, has been appointed to run the office in China and the Asian market. Van Berkum has 17 years of experience in the horticultural industry and has been active in Asia since 2001.

Hoogendoorn Asia looks forward to welcoming you at this new location: