Is Outlook 2003 fully compatible with Exchange Server 2010?

Is Outlook 2003 fully compatible with Exchange Server 2010?

I have a customer site who insists upon continuing to use Outlook 2003 even though they have just been migrated from Exchange Server 2003 to Exchange Server 2010.

The Exchange Server 2010 server is installed on a Server 2008 R2 Hyper-V server. Also, the domain has changed from being a Server 2003 SBS domain to being a Server 2008 R2 domain.

I just need to know if Outlook 2003 is fully compatible with Exchange Server 2010 or if Outlook 2003 is used with Exchange Server 2010 if problems will occur.
IT GuyNetwork EngineerAsked:
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Alan HardistyCo-OwnerCommented:
You won't have any problems using Outlook 2003 with Exchange 2010.

You might need to tweak Exchange to work with Outlook 2003, but it will work happily.

http://blogs.msexchange.org/walther/2009/08/30/exchange-2010-and-outlook-2003-clients-connection-issues/
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JohnGrunwellCommented:
Yes they are supported http://technet.microsoft.com/en-us/library/bb125239(EXCHG.140).aspx bottom of page
All MAPI clients are running a supported version of Outlook, including Microsoft Outlook 2007, Outlook 2003
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MegaNuk3Commented:
Run outlook 2003 in cached mode for the best experience.
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