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Exchange 2003 to 2007 Transition Advice

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Exchange 2003 to 2007 Transition Advice - 29.Aug.2011 3:38:01 PM   


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I am planning a transition from our Exchange 2003 environment to Exchange 2007 and was hoping to get some advice.

The current configuration is a FE for OWA, BE for mailboxes, both on server 2003 sp2 and a barracuda spam and virus firewall for incoming/outgoing mail. The new setup will be just one exchange server with the CAS+Mailbox roles and the barracuda firewall on windows server 2008 sp2 x64. I will also be adding ssl to owa since the previous admin never configured this.

I would like to make this transition without disrupting users and have some concerns.

1. I have read that in order for Outlook users to switch seamlessly to the new server, they would need to open Outlook while both old and new servers are coexisting. That way Outlook can reconfigure itself to use the 2007 server. So I was planning to have both server running for about a week to give everyone time to log in and have this change done automatically.

2. I am a bit confused about the OWA redirection that will take place in this scenario. If I change DNS for the owa url to point directly to the Exchange 2007 server will this work if some mailboxes are still on the 2003 server? Will that work if all mailboxes have been moved to the 2007 server?

3. If I get an SSL certificate from a third party CA (verisign, geotrust, etc), do I have to worry about phones getting any certificate errors? Will the phones (blackberry,iphone, droid) automatically get the certificate when setting up email without any extra steps?

I have read through this guide and it has been very helpful, but it would be nice to get some opinions from others on any issues i may have. http://www.msexchange.org/tutorials/transitioning-exchange-2000-2003-exchange-server-2007-part1.html

Thank you for the help!
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RE: Exchange 2003 to 2007 Transition Advice - 30.Aug.2011 11:05:51 AM   
John Weber


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From: Portland, Oregon
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How many users?
How much data?


John Weber [Lync MVP] http://tsoorad.blogspot.com

(in reply to shamrock0)
Post #: 2
RE: Exchange 2003 to 2007 Transition Advice - 30.Aug.2011 11:21:50 AM   


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Around 200 users/mailboxes.

40GB Storage group.

(in reply to John Weber)
Post #: 3
RE: Exchange 2003 to 2007 Transition Advice - 21.Sep.2011 11:32:46 AM   


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If you do a search of this forum...you should find quite a bit for the questions you've asked.  As for the OWA thing...simplifying the OWA URL is an article to look for on Microsoft's site.  I've posted that as well as a few other things in a few threads regarding some of this transition...i just recently went through the adventure myself.

I go through GoDaddy for my certs...they work well and are cheap.  There are some good coupon codes you can find to save some good money too.  Android and iPhones have no issues with it and will adhere to your ActiveSync policy.

I wish I had only 40gb for 200 users....that's great.  You have mailbox size restrictions?

(in reply to shamrock0)
Post #: 4

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