In this case, you would have to install the Outlook Connector for Lotus Notes (or DAMO) and create a local .PST file for each mail file in Domino. Once you do this, getting the mail file into Exchange is relatively easy.
Note: on the Lotus side, change the mail template to one of the Web Access templates (assuming Notes v. 6.x or higher) then synchronize the Address Book and Journal (if used) from the client before creating the .PST file. This will populate contacts and journal entries in Exchange, making the transition much easier for the users. If this isn’t possible, then march on anyway.
This isn’t a trivial move. Do it on a test system several times before running it in production, since the free tools supplied don’t work flawlessly. There are multiple issues we ran into with file size and problems with the Lotus / Exchange Migration tool that made this task difficult.
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I need to migrate about 100 users from Lotus Notes to Exchange 2003 (not 2007). The Lotus server is in a remote network, not local LAN. There is no possibility of connecting them on the same network or AD. I am told that I will get the Lotus NSF files and that's it. There is no encryption involved.
Any suggestions on how to migrate these users to Exchange? If you have done such a migration please let me know what you did. All the articles I have found so far appear to assume that the two servers are in the same network and AD and that is not the case foir me.