How to make old data in old sourceone available to new one?

Hi all,

We have a project where we installed a new SourceOne environment with a new exchange and ADS environment. This one is working pretty fine but the question now is, how do the people get acccess from their new windows account and mailboxes to the old environment which is in the old domain?

The problem so far (what I know) is that you have to specify access to this data containers on the SourceOne environment but how to do this? Right now we have a ADs / LDAP querry which gives permission to the ADS user based on the email address but the old data is in an old domain, do you have any idea how we can give new users access to this old environment?

- ADS querry in old domain?

- LDAP querry

- Migrate data from old data container to new one?

- any idea?

Thank you,

Cheers