Hi all I am migrating from Exchange 5.5 Organization to a new Exchange 2000 ORG sp3(Windows 2000 sp3). I did not create any X.400 connector between the two Organization, I just create a new forward lookup Zone in my Windows 2000 DNS and MX record that point to my Exch 5.5 server and on Exch 5.5 server I use Internet mail connector (Smart host= Exchange 2000 mail Server), thus user can send mail between the two Organization. I have used ADMT to Clone(with SIDs) all users and Groups to the new domain. The migrated users have no email attributes, then I used the Microsoft Exchange Migration Wizard to copy mailbox. While using Migration Wizard , I connect to my Exch 5.5 using LDAP port 390, Select one user that I want to copy his mailbox and specified to which OU. The migration wizard ended with errors" see application log for errors. Here are these errors: Event id:13002 A mailbox could not be found in the target directory with the address 'x500:/o=FAIL/ou=FAILDOM/cn=Recipients/cn=jmclement'. Event id: 15001 An account could not be created for user '/o=FAIL/ou=FAILDOM/cn=Recipients/cn=jmclement'.