Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

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

Posted on 2011-09-05
2
Medium Priority
?
576 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
2 Comments
 
LVL 5

Accepted Solution

by:
CWCertus1 earned 2000 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

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

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

The core idea of this article is to make you acquainted with the best way in which you can export Exchange mailbox to PST format.
There can be many situations demanding the conversion of Outlook OST files to PST format and as such, there is no shortage of automated tools to perform this conversion. However, what makes Stellar OST to PST converter stand above the rest? Let us e…
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…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…
Suggested Courses

782 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