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Outlook 2003/2007 clients cannot connect to Exchange 2010 server

brdlckhrt
brdlckhrt asked
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Last Modified: 2012-06-21
I am transitioning from an Exchange 2003 server to an Exchange 2010 server.  I am able to send and receive email from a test account using OWA from the Exchange 2010 server. However, when configuring either an Outlook 2003 or 2007 client, I am not able to connect to the Exchange 2010 server. When configuring Outlook I get the username to resolve, but when I try to finish the configuration, at the very end a logon window appears wanting me to log onto the Exchange 2010 server? I shouldn’t be receiving this window, but even if I try to logon to the server using any account, administrator or otherwise, the logon window keeps showing back up? I have checked to make sure I am using encryption between the Outlook client and Exchange server but nothing is working.
Any help will be greatly appreciated.
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