Exchange 2007 Migration Authentication Issue

[Matt_Brfc]

Hi Guys,

 

I'm in the process of an exchange migration from 2003 to 2007. I'm currently at the sage of migrating mailboxes which has resulted in an authentication error after adding he mailbox to Outlook 2010.

 

When opening Outlook 2010 with a migrated mailbox on my new 2007 exchange server the users are being prompted to anter there AD username and password. Is there anyway to disable this bearing in mind that the user has allready authenticated agains AD at login?

 

Thanks

 

Matt