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  • Jaap Wesselius

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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 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.

Cloud Identities versus Federated Identities in Office 365

by , 01 December 2014 0 comments

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...

Office 365 Essentials - Subscriptions and Licenses

by , 08 August 2014 0 comments

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...

Private Cloud, What Is It and Why Do You Need It?

by , 11 March 2014 1 comment

Even where organisations cannot make full use of public cloud for reasons of security or because of bandwidth limitations, many of the advantages of flexibility and rapid deployment can be made by providing a private cloud where the IT department manages the service but allows users to use the resources as their requirements change. Could Private Clouds provide a new paradigm for enterprises, irrespective of the public cloud? Read more...

What's New in Exchange "15"

by , 24 July 2012 0 comments

The Beta of Exchange Server "15" shows considerable improvements in the ease of management and installation. It has been extensively re-engineered to make it more effective in working across several datacentres. It also has a new Outlook Web App that even allows offline working. Read more...

Windows Server 2012 and Hyper-V

by , 07 June 2012 3 comments

Windows Server 2012 comes with substantial improvements to the hypervisor-based virtualization system Hyper-V. This represents Microsoft's attempt to catch up with rival virtualisation technologies and support enterprise-based 'private cloud' services, and it is looking good. Read more...

Migrate to Office 365

by , 08 March 2012 1 comment

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...

Exchange 2010 SP1 - A Practical Approach

by , 17 January 2012 0 comments

This update of Jaap Wessellius' popular guide to Exchange 2010 covers everything you need to know to install, run and maintain Exchange 2010 SP1. Read more...

Exchange 2010 Service Pack 2 - What's New

by , 05 December 2011 0 comments

Microsoft Exchange Service Pack2 (SP2)is now released, so Jaap Wesselius has taken a look at the latest update, highlighting some of the most interesting features of the latest build. Read more...

Recover a Mailbox Server in A Database Availability Group (DAG)

by , 10 October 2011 1 comment

When one mailbox server in a Database Availability Group (DAG) is accidentally deleted, then it is supposedly easy to fix the problem, but if the DAG is not fully cleaned up, it can prove a little more complex. Read more...

Managing Office 365

by , 03 August 2011 2 comments

As you start to use Office 365 more extensively, it becomes crucial that you understand all of the options for managing your new cloud-based infrastructure. Jaap Wesselius has done the research, and explains all. Read more...

Office365 and Lync Online

by , 10 May 2011 0 comments

Having gotten us up and running with the basics of Office365, Jaap Wesselius now dives deeper, walking us through the setup process for Lync Online, the Office365 component which provides cloud-based Unified Communications. He even shows us how to integrate it with our on-premises systems in quick, easy steps. Read more...

Microsoft Office 365 Beta: First Look

by , 20 April 2011 0 comments

With the recent announcement of the Office 365 public beta, Microsoft has unveiled the next incarnation of their cloud-based services. Lucky for us, Jaap Wesselius has the inside scoop, and gives us everything we need to start using the new platform. Read more...

Dynamic Memory in Windows 2008 R2 SP1

by , 11 April 2011 1 comment

Windows Server 2008 R2 SP1 has introduced what Microsoft calls ‘Dynamic Memory’.The start-up RAM VM memory assigned to guest virtual machines can be allowed to vary according to demand based on the workload of applications running inside. Fine, but it requires careful setting up for certain applications. Jaap explains. Read more...

SMTP Routing Changed in an Exchange Database Availability Group

by , 03 February 2011 0 comments

In Exchange Server 2010 it is possible to make the system more resilient by creating a Database Availability Group (DAG) where the nodes contain multiple server roles. Read more...

Upgrade from Exchange 2007 to Exchange 2010 - Part III

by , 13 January 2011 3 comments

Jaap has now walked us most of the way through the upgrade from an Exchange 2007 environment to an Exchange 2010. In this last article in the series, he takes us the rest of the way, and completes the migration. Read more...

Upgrade from Exchange 2007 to Exchange 2010 - Part II

by , 14 December 2010 6 comments

Having walked us through the initial steps of the migration from Exchange Server 2007 to 2010, Jaap now discusses the next stage of the process - Configuring External access to your Exchange environment, and setting up your new Exchange 2010 Mailbox Server. Read more...

Upgrade from Exchange 2007 to Exchange 2010 - Part 1

by , 18 November 2010 8 comments

Upgrading to Exchange Server 2010 is easy if you know how, and Jaap’s simple walkthrough will guide you painlessly through the process. Having already explained the step-by-step upgrade process for those of you using Exchange Server 2003, Jaap now makes life easy for the Exchange Server 2007 SysAdmins, too. Read more...

Importing PSTs with PowerShell in Exchange 2010 SP1

by , 21 October 2010 3 comments

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...

Address List Segregation or the “Hoster Edition” of Exchange Server 2010 SP1 – don’t even think about it!

by , 20 September 2010 0 comments

Although very tempting to use, the Hoster Edition of Exchange Server 2010 SP1 is not an alternative for the enterprise customers. Don’t try it, don’t even think about it, there’s too much complexity for the average enterprise customer. Read more...

Exchange 2010 Online Move-Mailbox – Mailboxes Offline for only a few Seconds

by , 09 August 2010 0 comments

Exchange Server 2010 has an online Move-Mailbox functionality, invoked by calling the New-MoveRequest cmdlet. By using it, the time a mailbox is offline has been reduced to only seconds. Read more...

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

by , 06 July 2010 1 comment

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...

What's New in Exchange Server 2010 SP1?

by , 22 June 2010 1 comment

The very latest and greatest incarnation of Exchange Server 2010, Service Pack 1 Beta, is now available for the public to try out. Lucky for us, Jaap’s had access to the new release for quite some time, and he gives us a distilled guide to exactly what is new and improved. Read more...

Hyper-V R2 Live Migration

by , 10 February 2010 2 comments

Reliability is one of the great payoffs to virtualization, and failover clustering has got a whole lot better with Windows Server 2008 and Hyper-V. Now, you get failover without any downtime for the virtual machine. Jaap tells you how to implement it. Read more...

Moving Exchange Databases and Log Files

by , 18 January 2010 0 comments

It makes a lot of sense to move the database and log files of an Exchange server to separate physical disks; one each for log and data. but how do you go about doing it? Jaap explains. Read more...

Upgrade Exchange 2003 to Exchange 2010 - Part II

by , 15 January 2010 26 comments

In Jaap's second article on upgrading straight from Exchange Server 2003 to 2010, he explains how to move the various services from Exchange Server 2003 to Exchange Server 2010 and fully decommission the Exchange Server 2003 servers. Read more...

Upgrade Exchange 2003 to Exchange 2010

by , 11 December 2009 31 comments

In this article, the first of two in which Jaap describes how to move from Exchange Server 2003 straight to Exchange Server 2010, he shows what is required before moving mailboxes from Exchange Server 2003 to Exchange Server 2010. He shows how to upgrade Active Directory, install both Exchange Server 2010 and certificates, and set up the Public Folder replication. Read more...

Introduction to Exchange Server 2010

by , 22 October 2009 5 comments

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...

Exchange 2010 - A Practical Approach

by , 13 October 2009 3 comments

Jaap's Practical Guide to Exchange Server 2010 draws upon all that experience to deliver an easy-to-use guide to this latest platform, full of useful examples and top tips for SysAdmins, both new and experienced. Read more...

Exchange backups on Windows Server 2008

by , 24 August 2009 1 comment

NTBackup lives no more, replaced by VSS backups. Unfortunately, “Windows Server Backup” didn't work with Exchange Server 2007 until now. Exchange Server 2007 Service pack 2 contains a backup plug-in that makes it possible. Although pretty limited compared to full backup application like Microsoft Data Protection Manager or Symantec Backup Exec it does what you want it to do: create backups. Jaap explains... Read more...

Update: Exchange Server 2010 Release Candidate

by , 18 August 2009 0 comments

Exchange Server 2010 Release Candidate is now available for download from Technet, so we asked Jaap to review it for us. Read more...

Installing Hyper-V and Beyond

by , 28 July 2009 4 comments

In his previous article “Hyper-V, an introduction” Jaap Wesselius explained about the Hypervisor, the parent partition, the child partition, and Integration Components. In this article Jaap discusses installing Hyper-V, all kinds of Virtual Hard Disks, Virtual Networks, and some best practices. Read more...

Building an Exchange Server 2007 environment

by , 29 June 2009 0 comments

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...

Windows Server Virtualisation: Hyper-V, an Introduction

by , 01 June 2009 7 comments

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...

Exchange Server 2010 – The First Public Beta Version

by , 15 April 2009 3 comments

Jaap takes a first look at the new Beta 1 of Exchange Server 2010, which is now available for download, and likes what he sees, especially with Outlook Live, mailbox replication, and the 'self-healing' of the database. Much will change before the release, but there is already a lot of new features that are worth a look.. Read more...

Upgrading to Exchange Server 2007: Part 2

by , 26 March 2009 0 comments

Jaap completes his series on the necessary steps to migrate an existing installation of Exchange to Exchange Server 2007. He deals with the problems of installing the Hub Transport server, moving policies and mailboxes and decommissioning the old servers Read more...

Upgrading to Exchange Server 2007

by , 20 February 2009 1 comment

Jaap starts a series on the necessary steps to migrate an existing installation of Exchange to Exchange Server 2007. Of course it's simple! Everybody says so, but it is in the detail where you can get caught out. Read more...

Exchange: Recovery Storage Groups

by , 06 January 2009 6 comments

It can happen at any time: You get a request, as Admin, from your company, to provide the contents of somebody's mailbox from a backup set as part of an investigation. The Recovery Storage Group is usually the easiest way to do this. It may either mean using the Exchange Management Console or the Exchange Management Shell. Jaap explains all. Read more...

Virtual Exchange Servers

by , 20 November 2008 6 comments

Microsoft now supports running Exchange Server 2007 in server virtualization environments, not just on Hyper-V, but on any virtualizing solution that is validated in the Server Virtualization Validation Program. Before virtualizing Exchange Server, you will need to be clear about the business advantages, and consider the size of the installation, otherwise the results can be a disappointment Read more...

Online Exchange Backups

by , 18 October 2008 5 comments

In the third of Jaap's popular series on Exchange Backups he explains Online backups. These have major advantages over offline backups since the backup application does all the logic, and work, for you. Read more...

Exchange Server Log File Replay

by , 22 September 2008 6 comments

Exchange Server stores information in a database and uses log files for transactional processing. To restore, defragment  or repair a database, the ESEUTIL tool is essential . It is always possible to recover data when the database is lost, if you have backed up the database.& Read more...

Exchange Database Technologies

by , 22 August 2008 10 comments

One of the most misunderstood technologies in Exchange Server, regardless of its version, is the database technology. Most people, even Exchange administrators know it is something to do with ESE and tools like ESEUTIL, but once it’s running they leave it that way for the rest of their lives. It’s too difficult and you’d better not touch it in case it breaks…. Read more...

Exchange 2007 Mailbox Server Clustering

by , 12 August 2008 4 comments

The original, rather complex, Exchange clustering, 'Single Copy Cluster', protects you against a server failure but not a database failure. 'Local Continuous Replication' protects you from database failure, but not server failure. The more simple 'Clustered Continuous Replication' protects against both. If you use it with Transport Dumpster, you won't lose emails. Read more...

Upgrade Exchange 2003 to Exchange 2007 – Part II

by , 18 January 2008 0 comments

Article redirect. Read more...

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