We recently were using a tool to import e-mail address into active directory and accidentally completely wiped out all of the e-mail addresses that were associated with our Exchange users. Any user who had "Automatically update email addresses based on e-mail address policy" checked seem to be unaffected but anyone who did not have it checked suddenly have no e-mail addresses anymore.
We do have backups of Exchange and AD and the "recycle bin" features of AD are enabled although I don't think they will help as the objects were not deleted.
How can we go back an restore all of the e-mail addresses associated with each user?
And no, we will not be using the AD import tool again. . .
Server 2008 R2
Exchange 2010 SP2 (220.127.116.11)
Active Directory Recycle Bin is enabled