RE: Exchange server 5.5 and domain upgrade

  • From: "Christian Kurmann" <ckurmann@xxxxxxxx>
  • To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Fri, 1 Mar 2002 13:39:02 +0100

We had similar expierences in our testlab, With the upgrade not running right. 
I also resolved to saving everyones PST localy. However there are two things to 
watch out for with the PST files. Make sure they have absolutly no encryption 
or password protection, and make sure you copy them back into your new E2K 
environment and not Move..

I Didn't do this very carefully, and two days after setting everything up my 
upgraded W2K PDC decided to stop communicating with my fresh E2K server. This 
caused quite a bit of caos because although all my mails where still on the 
E2K, there was no way of getting at them because the Security Ids of the users 
where no longer Valid on the E2K.

I Admit this was caused because of lack of knowledge on my side, and possibly 
rushing the whole thing, but I still haven't found out Why the Active Directory 
lost conntact to the E2K, and from what I have read there are others who have 
had the same sorry experience. So keep your PST handy even after everything is 
working again.

Good Luck

-----Original Message-----
From: Bill [mailto:bill9065@xxxxxxxxxxx] 
Sent: Freitag, 1. März 2002 12:14
To: [ExchangeList]
Subject: [exchangelist] RE: Exchange server 5.5 and domain upgrade

Upgrading the PDC as mentioned with Win2K initial installation causes Windows 
2000 to function as a PDC emulator.

Depending on the number of users you have on your EX5.5 box (I assume you have 
one EX5.5 server only) you essentially have 3 choices:

1. Performing an upgrade in place of your EX5.5 server (after upgrading the box 
to Windows 2000) OR;

2. Installing a brand new box with a fresh copy of E2K Server (in the same
site) move mailbox between servers. (ADC will be required in this
instance) OR;

3. Depending on the number of users (we had 120 users and did this) - we 
created PST files for each user over a weekend.  We fully trashed the old NT4 
box including Exchange 5.5.  Re-Built our machine with Win2K as the next DC, GC 
etc  and installed a clean copy of Exchange 2000 (without ADC) then set E2K in 
native mode whilst still running AD in Mixed mode. We then imported all users' 
PST files.  The only thing to condider is that if a user replies to an old 
email they will have to re-select the recipient from the GAL. We took the time 
to set up our AD properly etc.  This is a longer process but it provided us 
with a complete safety factor in that if we screwed up big time, we still had 
our users email. Of course none of this is in the text book and the reason why 
we did it was because upgrade in place of EX5.5 failed many times in our test 
lab.  It made sense for us to play it safe. The other reason we did it was 
because our server really needed to be cleaned up and slightly larger disks 

I recommend that you set up a test lab and prove things for yourself.


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