Migration from Exchange 2003 to Google Apps

I cant get the migration to work from Exchange 2003. It uses IMAP for migration and I have enabled IMAP on every user in the Active Directory. It comes up with an error 'unable to authenticate the user'. The username and password are correct but it gives this error for all the users. Has anyone had this problem ?

Solution 1:

http://anchorite.org/blog/2007/08/18/exchange-2003-to-google-apps-migration-howto/

Don't know what your problem is, it could be the ports are wrong, your firewall is blocking it, your IMAP connector is off, your test account is locked out, g-standard-edition-restrictions, might need fully qualified name ([email protected]).

You could ask google, those fellas are usually pretty switched on: http://www.google.com/support/a/bin/answer.py?hl=en&answer=61369