Jaap Wesselius

Jaap Wesselius is an independent consultant from The Netherlands focusing on (Microsoft) Business Productivity solutions with Microsoft Exchange, Lync and Office 365. Prior to becoming an independent consultant in 2006, Jaap worked for 8 years for Microsoft Services in The Netherlands, specializing in Exchange Server. Jaap has a Bsc in Applied Physics & Computer Science, is an MCSE, MCITP and MCT, and has consistently been awarded the Microsoft MVP Award (Exchange Server, eighth year now) for his contributions to the (Dutch) Exchange community. For his blog posts, you can visit http://www.jaapwesselius.com. If you'd like to get in touch, you can reach Jaap via email at Simple-Talk@jaapwesselius.nl, or follow him on twitter as @jaapwess.

01 December 2014
01 December 2014

Cloud Identities versus Federated Identities in Office 365

Identities, the 'accounts' by which Cloud and Web users identify themselves, are tricky to manage, and tiresome for the users. Cloud services such as Office 365 have their main use in large organisations and so there have to be easy ways for system administrators to maintain them. Microsoft provide three alternative strategies; Cloud identities, Synced identities and federated identities. What is the differences between them, and which should you choose? … Read more
08 August 2014
08 August 2014

Office 365 Essentials – Subscriptions and Licenses

Should you be planning to move from Exchange to Office 365? If so, why? What sort of license should you get, and should you use cloud identities or federated identities for your users? Jaap starts a series of articles with an overview of the advantages, and a simple explanation of the options in subscriptions and licenses for Office 365.… Read more
08 March 2012
08 March 2012

Migrate to Office 365

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If you are using Exchange Server 2003, it is worth considering a move to Office 365 instead of Exchange 2012. If you have business reasons to do so, it is possible to use the migration tool to switch over from an 'on-premises' Exchange-hosted mail service to a cloud-based Office 365 service. Jaap walks through the steps for a relatively small corporation..… Read more
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21 October 2010
21 October 2010

Importing PSTs with PowerShell in Exchange 2010 SP1

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Unless you use Red Gate's PST Importer, the import and export of PST files with Exchange 2010 is a complex and error-prone business. Microsoft have acknowledged this in the release of Exchange 2010 SP1, since they have now re-engineered the way that PSTs are handled to try and ease the pain of importing and exporting them, but it is still a matter of using Powershell with cmdlets, rather than a GUI. Jaap Wesselius takes a look at the new process. … Read more
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06 July 2010
06 July 2010

Hyper-V R2 Live Migration on Server Core – Part I

If you're working with Hyper-V, it's recommended that you use Windows Server 2008 R2 Server Core for your root partition, as its stripped-down nature makes it a more secure option than it's more full-bodied sibling. But it can also be painful to work with. Jaap Wesselius expertly guides us through the pitfalls.… Read more
22 October 2009
22 October 2009

Introduction to Exchange Server 2010

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What's new in Exchange Server 2010 and what features from Exchange Server 2007 have been deprecated? What has been done to further integrate Exchange with Active Directory? In an extract from his new book, Jaap gives a rooftop view of Exchange's new features and their significance, and spells out the main reasons why it is worth upgrading.… Read more
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29 June 2009
29 June 2009

Building an Exchange Server 2007 environment

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Of course, changing a 32,000 mailbox system, based in 40 Exchange Servers, to a centralised 25,000 mailbox solution is not a difficult task as long as you follow the Microsoft guidelines; It just takes patience, and time to understand Exchange's storage design principles. Jaap describes the design process and shares his experiences with the chosen server hardware.… Read more
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01 June 2009
01 June 2009

Windows Server Virtualisation: Hyper-V, an Introduction

For SQL Server and Exchange Server, Windows Server Virtualization is going to be increasingly important as a way for the administrator to allocate hardware resources in the most efficient way, to offer more robust services, and for deploying services. Jaap Wesellius starts his new series on Hyper-V by explaining what Hyper-V is, how it relates to Windows Server 2008 and how it compares to ESX, Virtual Server and Virtual PC. .… Read more