We are in the process of planning a KMS deployment and I am having difficulty working out how to make the migration from our old POP3 mail server to an IMAP solution on KMS.
Is there a best practice methodology for doing this, or can any of you let me know how you achieved it without loss of service, or email? I'd like to do it bit by bit if possible (160 users), but will consider doing it all in one go if necessary. Users are a mix of Mac (Mail.app and Entourage) and PC (Outlook pst's).
[Updated on: Mon, 12 January 2009 18:20]
We migrated from approx 120 AS/400 POP3 mailboxes to KMS IMAP. Because we're a sales organisation, mail is extremely important, so I had to do it box per box, user per user. The whole migration took about 2 weeks in run-time, spread over about half a year.
I used two "tricks" in the migration process:
- Kerio was configured to forward mail to the AS/400 if the user wasn't found (yet) in the Kerio userlist.
- POP3 on Kerio popped the user's mailbox on AS/400 as long as not everybody was migrated off the AS/400 mailserver.
The migration itself (user by user) was rather easy. Create the user on Kerio, configure the mail client and import the (local) mailfile. All our clients are Outlook 2003 so that was rather easy.
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