We are in the process of migrating users to Exchange 2007, from 2003, we are having a strange issue with email addresses. Some users are getting random numbers added after their username. For example from with in Outlook when I hit the "B" and the usernames drop down (auto complete) there's a user with an email address that looks like this : Bob Jones <bjones23229069> This is happeningregardless of the mail client that is used.This particular user has been on the Exchange 07 server for 3 weeks and it just started. The emails are working, but with 1300 users, many people are confused. Could this be a corrupt GAL?