I am wondering about the affect of one of the last stages of migration from Exchange 2003 - 2010.
I have many mailboxes which do not follow an email address policy and to make a change now would have serious affects on mail flow.
I have migrated many mailboxes to 2010 which has resulted in the default email address changing and had to manually change it back.
What I am concerned about now is the affect that migrating/upgrading the default address policy and address lists to Exchange 2010 is going to have.
Am I Ok to assume that if I run set-emailaddresspolicy and set-addresslist to migrate it will not change the 2010 mailboxes addresses?
Thanks for the assistance