I'm workign with an organisation currently uses Lotus Notes and Domino email server for email, documents and address book.
1) How easy is it to export the complete store of documents and the address book.
2) How easy is it to export the contents of the mail system in a form that would facilitate importing into either a Linux based email server or possibly Exchange Server. I'm thinking of something similar (but obviously different!) to Microsoft's Exmerge utility that makes it very easy to move a mail system between Exchange Servers.