Hello,
As I understand your question, you are looking for a way to take profile information currently stored in SharePoint, (e-mail account, username and passwords), and add that information to a new Exchange Server. SharePoint gets its profile information
from Active Directory (AD) and this information is synched up in the SSP Users and Profiles. If you are building up a new Exchange server, it should also use this same process of getting its profile information from AD, not SharePoint. There is
no function available in SharePoint to export profile information to another application such as Exchange.
As a side note, SharePoint does not store password information. All passwords are authenticated against AD and the passwords setup in there.
Please remember to click 'Mark as Answer' on the post that helps you or click 'Unmark as Answer' if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.
Regards,
Nishant Shah
Microsoft Online Community Support