I have a strange issue, we have had a contact list for one of our offices for a number of years in AD with no issue. Recently the email addresses changed on the list from firstname.lastname@example.org to email@example.com. The xxx has been added in by AD as an incorrect entry.
Any ideas how this would have happened and is thier an easy way to update as a group?
I have requested a new list from the other office which may be easier to import and delete the current.