Solved

Exchange 2003 owa connection during Exchange 2007 transition

Posted on 2009-07-08
2
264 Views
Last Modified: 2012-05-07
Hi all -
We are currently moving through an Exch 03 - 07 transition.
We have 3 mail servers in the Exch 03 environment in 3 different AD sites that handle owa access. We will be implementing an Exch 07 environment that includes 1 CAS, 1 HUB and 2 mailbox servers (in a CCR configuration) in our data center. We will not have any mailboxes on the cluster initially. We will not have an Edge server in place; per recommendations we will be implementing an ISA server in the DMZ for the OWA/RPC/ActiveSync traffic to route through.
So I have 3 questions:
1. If CAS is up, but the external mail relay is not pointed to it, everything continues to route to the Exch 03 organization, just as it does now, correct?
2. After we bring up the CAS server and start routing the email from our host relay service to the CAS server, and given that we do not immediately have mailboxes set up in the Exch 07 environment, is OWA access going to remain as is for all the Exch 03 users until we actually get OWA access going to CAS?
3. Once OWA access routes through ISA and points to CAS, do we simply take down the current OWA connections, and will CAS automatically do the routing to those servers for OWA?
See attached diagram
Visio-F-P-Exchange07-Interim-Ste.pdf
0
Comment
Question by:SJ53
2 Comments
 
LVL 8

Accepted Solution

by:
Npatang earned 500 total points
ID: 24808350
First Question , you are correct: Till then the external mail is not pointed its not going to perform any issues.
Changing the host Relay servive doesn't affect OWA until the URL you use for the OWA point to the CAS BOX from ISA. ( I think you get the Answer for question 3 as well )
0
 

Author Closing Comment

by:SJ53
ID: 31601322
Thanks! I was able to get additional confirmation on this from a consultant we are working with, so I feel much better about the transition plan.
0

Featured Post

6 Surprising Benefits of Threat Intelligence

All sorts of threat intelligence is available on the web. Intelligence you can learn from, and use to anticipate and prepare for future attacks.

Join & Write a Comment

Exchange server is not supported in any cloud-hosted platform (other than Azure with Azure Premium Storage).
Not sure what the best email signature size is? Are you worried about email signature image size? Follow this best practice guide.
In this video we show how to create a Distribution Group in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Recipients >>…
In this Micro Video tutorial you will learn the basics about Database Availability Groups and How to configure one using a live Exchange Server Environment. The video tutorial explains the basics of the Exchange server Database Availability grou…

760 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

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now