My name is Michel de Rooij and I’m an Office Apps & Services MVP, and aid organizations in their journeys with Microsoft Exchange and related products and technologies as well as in the scripting (PowerShell) space by developing project or administration supporting tools.

After my bachelor study Computer Science, I started my professional career as a 3/4GL developer (Clipper, Powerbuilder). After working on several applications around data processing for few years, I became more interested in infrastructure technology and at some point I got the opportunity to make the professional switch to infrastructure.

Since then, I have participated in many projects that range from client migrations to designing infrastructure architecture, but since 2004 my work experience has been related to Exchange and related products and technologies, and more recently Office 365. My background as developer is a big asset as modern infrastructure related projects involve scripting (PowerShell) knowledge, or support on creating tools to support solutions or projects.


In case you are wondering where names such as Philip Mortimer, Francis Blake or Olrik that make an appearance in many examples come from, I took them from the comics series Blake and Mortimer, created by the late Edgar P. Jacobs.

What’s with this name, EighTwOne? Well, I had to make up a name as all the variations on mistermail, exchangeguy and deliverydude were already taken. So, used the original RFC number for SMTP, which was RFC 821, and wrote that down: eight two one. Then I noticed matching letters between words, so I left them out keeping only 1 letter in uppercase (for readability). So, RFC 821 became eight two one became EightTwoOne and ended up in EighTwOne. Mystery solved.

10 thoughts on “About

  1. Pingback: Exchange 2010 Reference Material | Lynn Lunik - Chief Security Architect

  2. Pingback: All Exchange 2010 network communications in a diagram « Bhargav's IT Playground

  3. 821 mystery solved. Whenever I say your site name I remember the martial art “taekwondo”
    Keep up your good work Michel. I learned a lot from your blog.


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