First year awarded:
Number of MVP Awards:
Technical Expertise:
Exchange Server
Technical Interests:
Lync, SharePoint Server
Dutch, English
Jaap Wesselius (Jaap Wesselius)
Jaap Wesselius - Exchange Server MVP & Microsoft UC Specialist
I'm working as an independent consultant, primarily focusing on Exchange server, Lync server and Office 365. I'm working with Exchange server since version 5.0 running on NT4 (first implementation in 1997, approx. 1200 seats). Since 1998 I'm also involved in hosting, starting with MCIS (Microsoft Commercial Internet System) which was later on incorporated into Exchange server. I've done all kinds of projects, greenfield, migration, hosting etc.
Besides Exchange server I'm also working with Lync Server 2010/2013 and have a strong interested in virtualization (Hyper-V/SCVMM).
I still do a little consulting work, but do presentation on major events (MEC, TechEd, Connections, TEC) on a regular basis and I'd like to work as an author as well. My first book on Exchange 2010 was published by the end of 2010 (2nd edition written on Exchange 2010 SP1) and my Exchange 2013 book is on its way.

In the community I'm active on my own blog, but also for the Dutch UC group ( and the Hyper-V community (
Recent activities