Removing Exchange 2003 fully

********Problem Outline
*Have migrated from Exchange 2003 to 2010 (2003 was on a domain controller) - things "seem" OK i.e. running since mid July.
*Uninstalled Exchange 2003 (used http://technet.microsoft.com/en-gb/library/gg576862(v=exchg.141).aspx)
*Want to demote the old Exchange 2003 server from being a domain controller. Was suspicious things might go wrong so just turned it off for a couple of days to see if anything broke
*Not definitely related to the turn off but very coincidental otherwise, once turned off users with Outlook 2007 on Win7 had Outlook, Acrobat and Word etc. hang/crash when opening attachments.
*Turned back on and all OK again

********My Question
Is this related to the fact that there are still Exchange 2003 things in Active Directory? i.e. in ADSIEdit I still have Configuration>Services>Microsoft Exchange><domain>>Administrative Groups>First Administrative Group
If so how do I get rid of those? ADSIEdit?
If not what else could be causing this?
dejectedAsked:
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AmitIT ArchitectCommented:
If Exchange server not removed properly then you can use adsiedit to clean up, however also check client side machine, especially if you file any .prf file under office folder, open it with notepad and check if exchange 2003 is present.
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hecgomrecCommented:
If the Exchange 2003 removal was performed without issues, there should not be any problems unless DNS A and MX records are not updated to point to the new server.

Also, can check in your Exchange 2010 under the Organization Configuration if it is attached to the missing server or it will look for a default domain controller and don't forget to update those clients to the latest update of office 2007, if that doesn't help, try to re-create the profile.
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dejectedAuthor Commented:
Tried recreating the Outlook profile but that didn't work.
Checked that Exchange 2010 server and it has no references to the old server.

Thanks for the suggestions though.

My "solution" was to recreate the user's Windows profile on their PC. Fine for users with generic profiles but no good for users e.g. accounts with all manner of setups for online banking, accounting etc.
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dejectedAuthor Commented:
The suggestions were good but did not fix the issue
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