In my earlier blog posts Building Hosted Exchange Part I (overview), Building Hosted Exchange Part II (Active Directory) and Building Hosted Exchange Part III (Exchange and ABP’s) and Building Hosted Exchange Part IV (Global Settings) we’ve created a simple Exchange 2010 organization that’s capable of hosting multiple organizations, separated from each other and each having their own Address Books. There’s one last issue I want to point out and that’s message routing. Exchange sees the entire Exchange organization as just one entity and does not care at all about routing between tenants. This is true for SMTP routing as well as out-of-office messages (which are SMTP messages as well of course) for internal and external OOF messages.
Note: using the Address Book Policies you can do ‘GAL segmentation’ but this is a feature that’s only targeted towards Address Books. Transport doesn’t do anything with Address Book Policies! Continue reading Building Hosted Exchange – Part V
In my earlier blog posts Building Hosted Exchange Part I (overview), Building Hosted Exchange Part II (Active Directory) and Building Hosted Exchange Part III (Exchange and ABP’s) we’ve created a simple Exchange 2010 organization that’s capable of hosting multiple organizations, separated from each other and each having their own Address Books. But as outlined in the Microsoft guidance document there’s more involved, especially when it comes to global settings that are identical for all users (in all organizations) or global settings that can reveal unwanted information.
Global Exchange configuration
When building a hosted Exchange 2010 SP2 environment a number of Exchange configuration settings have to be taken into account.
There are certain global settings that are valid for the entire organization and are therefore set on an organization level and not on a tenant level. Example of these configurations (this is not a complete list!) are Exchange ActiveSync settings, Exchange Web Services, OWA policies, Throttling policies, anti-virus and anti-spam checking, postmaster settings and the autodiscover settings.
Continue reading Building Hosted Exchange – Part IV
In my earlier blog posts Building Hosted Exchange Part I (overview) and Building Hosted Exchange Part II (Active Directory) I explained the basics and how to configure Active Directory for a multi-tenant environment. In this posting we’re going to continue with the Exchange part of the multi-tenant environment.
Exchange 2010 SP2
In the previous post I used a simple Powershell script to create the Organization Units in Active Directory for three different companies that will be hosting in our sample environment. Besides the creation of the OU’s the script also sets the appropriate permission on the OU’s. The structure looks like this: Continue reading Building Hosted Exchange – Part III
In my previous blog post I tried to explain why Microsoft is following the partner model for hosted environment. If you fully understand the Microsoft guidance document and really want to build it yourself instead of using a 3rd party Control Panel vendor (which I always recommend) I’ll try to outline the various steps that need to be done.
Please note that this blog post is published ‘as is’ and is my personal belief on how stuff can be done. You still have to test everything in a lab environment before building things in production. I cannot, will not nor take any responsibility about your environment when things go wrong!
Continue reading Building Hosted Exchange – Part II
There’s quite a lot of demand in the market to build a hosting environment (multi tenant) based on Exchange 2010. In the past there was hosted Exchange (in Exchange 2003) and Address List Segregation (Exchange 2007) and the /Hosting option in Exchange Server 2010. The latter is no longer recommended by Microsoft and Microsoft now recommends to use an Enterprise deployment of Exchange Server 2010 SP2, combined with Address Book Policies (ABP) and a 3rd party Control Panel providing the ‘glue’ to get the various parts together.
Microsoft released a number of articles and whitepapers on the future of Exchange hosting and some guidance documents regarding building a hosting environment and migrating from an old platform to a new (Exchange 2010 SP2) platform: Continue reading Building Hosted Exchange 2010 – Part I