Emails in Autocomplete

I upgraded to a nes SBS 2011 Server with Exchange 2010,  All the clients connect to the new server and connect to Exchange, all of their emails from Exchange 2003 are imported.  When I try to send a new email and type a letter in To the autocomplete populates the name and I then send the email it is returned immediately.  If I delete the autocomplete name and then type the email address the email goes thru.  That would be OK if I only had one computer but I have 65 and all are doing the same thing.  How do I fix this?
M L WallaceOwnerAsked:
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Rob WilliamsConnect With a Mentor Commented:
The NK2 file contains more than just the e-mail address such that when migrating the internal addressing changes. It is trying to route to the old server.  Non-domain accounts should work but internal mail accounts usually fail.  You either have to delete the NK2 or edit it.  There is a very nice little free tool for editiing, creating, and exporting NK2's
With it you can sort by account type and delete all "EX"  (Exchange) type addresses.
Still a user by user task, unless you want to make one common NK2 file and copy it to all workstations.
Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
You can simply close Outlook remove the .nk2 file from all the client machines and start Outlook ... this will clear the cache.

- Rancy
The below article talks about renaming the nk2 files through a batch file. Kindly check if this helps you by any means.
I too would prefer you to simply rename or move the .nk2 as if even after editing it causes any issues you will have to move\rename ?

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