Solved

Exchange 2010 - Non Internet Facing CAS in Exchange 2003/2007 Environment

Posted on 2011-09-05
2
564 Views
Last Modified: 2012-05-12
Hi All

I have a bit of a non-standard environment for Exchange 2010 Setup.

Details as follows.

1 x Site with 3 x Exchange 2003 Servers all SP2 (2 Hosting User mail, 1 Hosting business mailboxes/Shared)
1 x DMZ with Exchange 2007 SP3 running CAS (Used for ActiveSync & OWA for user mailboxes only).

We will be migrating the user mailboxes to Office 365 later in the year but I need to replace one of the Exchange 2003 servers (Business mailboxes) with Exchange 2010. However no mailboxes on the Exchange 2010 will ever need to be accessed via OWA or Active Sync..

I have prepared AD and meet all the prerequisites for Exchange 2010.

I have installed 1 x  Exchange 2010 CAS server as non internet facing.

I need to know the following.

1.      Will the Outlook 2003-2010 clients will connect to 2 x Exchange 2003 servers hosting user mailboxes without issue (none so far) ?
2.      Can I leave the Exchange 2007 SP3 CAS in the DMZ until all user mail is moved to the cloud ?
3.      If I can leave the 2007 CAS Server in the DMZ till clients are on the cloud can I hold off on buying a certificate and just use a self signed one?

I will then run up 2 x Exchange 2010 in DAG for business mailboxes and move the certain mailboxes over.

Thanks
0
Comment
Question by:MediaMon
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 5

Accepted Solution

by:
CWCertus1 earned 500 total points
ID: 36487414
Are you aware that it is not a supported configuration to have a CAS server in a DMZ? MS only support an Edge server in DMZ. To get CAS functionality in DMZ, they recommend putting ISA (Forefront) into the DMZ and publish OWA (or just puch 443 through to your CAS server on the LAN).

To answer your questions though:-
1. The outlook clients will not move to the new CAS until their mailboxes are on a 2010 server. You may be able to redirect the outlook clients manually or via a new outlook profile but would be difficult setup.
0
 

Author Comment

by:MediaMon
ID: 36493662
Hi CWC thanks for your reply.

Yes I know its an unsupported DMZ config but it will see us through till we go office 365.

Thanks again

MM
0

Featured Post

NFR key for Veeam Backup for Microsoft Office 365

Veeam is happy to provide a free NFR license (for 1 year, up to 10 users). This license allows for the non‑production use of Veeam Backup for Microsoft Office 365 in your home lab without any feature limitations.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article explains how to install and use the NTBackup utility that comes with Windows Server.
Unified and professional email signatures help maintain a consistent company brand image to the outside world. This article shows how to create an email signature in Exchange Server 2010 using a transport rule and how to overcome native limitations …
The basic steps you have just learned will be implemented in this video. The basic steps are shown to configure an Exchange DAG in a live working Exchange Server Environment and manage the same (Exchange Server 2010 Software is used in a Windows Ser…
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…
Suggested Courses

635 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