Impacts of Changing DNS

Hi all,
i have an Exchange 2010 Organisation spanning 2 sites.
I am migrating DC and DNS from Windows 2003 R2 to Windows 2008 R2, and a new DC and DNS is already in place.
My questions are:
1) any known impacts in changing DNS on Network Settings on my Exchange Server?
2) Where do i have to modify - on Exchange Managemente Console - settings for pointing to a new DC/DNS? any known impacts doing that too?
Thanks to all in advance

As commented above it will connect to the next available DC in the same site. Jut change the DNS IPs in exchange server and follow any of these if you want to specify which DC/GC to use, and it will not create issues for you.
http://technet.microsoft.com/en-us/library/aa998227.aspx
http://exchangeserverpro.com/how-to-use-a-specific-domain-controller-in-exchange-2010-management-shell/
Thanks, MAS
Please mark as helpful if you find my comment helpful or as an answer if it does answer your question. That will encourage me - and others - to take time out to help you.

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