MS Exchange & AD Server Information Synchronization between two offices in different locations

Posted on 2007-03-27
Medium Priority
Last Modified: 2010-08-05
My existing office is in US and I am going to have another office in HK.  There is 1 x Exchange 2003 standard and 1 x AD server in my US Office.  I am planning to setup 1 x Exchange 2003 standard server and 1 x AD server in my HK Office too.  However,  I am not sure

(1) How can I synchronize domain information between two AD server ? Can each AD server backup each other ?

(2) How can I synchronize mailbox between two Exchange server ? Can each exchange server backup each other ?

As I am new to Microsoft environement, please try to explain in details or refer me to some document

thx a lot
Question by:bigeric
LVL 30

Accepted Solution

LauraEHunterMVP earned 252 total points
ID: 18799276
Active Directory is designed to replicate information between multiple domain controllers. Assuming that you have physical connectivity and DNS name resolution between the US and the UK sites, you can add the UK DC as an additional domain controller within your existing domain, as a new domain tree within your existing forest, or as a completely separate forest (if you choose this last option, the two domain controllers will not replicate information to one another by defalt and users from one office will not be able to access resources in the other office.)

Similarly, you can add the Exchange server in your UK office as an additional server in your existing Exchange environment in much the same way.

If you are brand-new to Active Directory and Exchange, I would recommend taking a training course or familiarizing yourself with any of the titles on the following pages:


For some free documentation and white papers to get you started, you can go to http://www.microsoft.com/ad and http://www.microsoft.com/exchange

Hope this helps.

Laura E. Hunter - Microsoft MVP: Windows Server - Networking

Author Comment

ID: 18799833
Thx a lot for your advice.  I would like to know more about the failover issue.

(1)For the two AD servers,  they will be setup as two domain controllers under the same forest and data will be replicated between them.  let's say, in case the one in US fails, can end users switch to the AD server in UK, is the process transparent to user or user had to do something ?

(2)For the two Exchange servers,  data will be replicated between the servers.  However, how can I setup two servers to provide resiliency.  Will it be in Active/Passive or Active/Active ?  It is because I want users in two locations use their local server (UK users use UK Exchange Server and US users use US server).  In case there is any problem on either server, the remaining server can provide service for users in both US and UK.  Does client need to change any client setting or do I need to change the MX record for server switching ?

LVL 15

Assisted Solution

czcdct earned 248 total points
ID: 18799932
The users don't need to "switch" between DCs, the whole idea is that the boxes are multi-masters and have the same data in both places. To be honest I would stop with this proposal and learn Active Directory for the next six months before going near an Exchange CD.

The Exchange servers cannot replicate mailbox data between themselves. If you want the same mailbox in two places you need Lotus Notes. Based on what you need to learn about Active Directory you should think about learning Exchange 2007 towards the end of the year. There are some new books coming out soon so keep an eye out for them. Until then just learn Active Directory.

You need not worry yourself about MX records, they have nothing to do with client access.

Expert Comment

ID: 20433895
Forced accept.

EE Admin

Featured Post

Get 10% Off Your First Squarespace Website

Ready to showcase your work, publish content or promote your business online? With Squarespace’s award-winning templates and 24/7 customer service, getting started is simple. Head to Squarespace.com and use offer code ‘EXPERTS’ to get 10% off your first purchase.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

You have missed a phone call. The number looks like it belongs to the bunch of numbers which your company uses. How to find out who has just called you?
The Exchange database may sometimes fail to mount owing to various technical reasons. A dismounted EDB file can be the source of many Exchange errors including mailbox inaccessibility for users. Resolving the root cause of mounting problems becomes …
This video demonstrates how to sync Microsoft Exchange Public Folders with smartphones using CodeTwo Exchange Sync and Exchange ActiveSync. To learn more about CodeTwo Exchange Sync and download the free trial, go to: http://www.codetwo.com/excha…
Watch the video to know how one can repair corrupt Exchange OST file effortlessly and convert OST emails to MS Outlook PST file format by using Kernel for OST to PST converter tool. It can convert OST to MSG, MBOX, EML to access them. It can migrate…

627 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question