Quoc Vu:

If you must do this, I suggest you:

        1. Plan, Prepare and Install MS Exchange (pay close attention to domain/ADS
security)
        2. Develop a MS Exchange backup, recovery and contingency plan - trust me
you'll need it!
        3. Replicate/create Cyrus IMAP accounts into MS Exchange (username,
password, folders, etc..)
        4. Perform MS Exchange Functionality Testing - Test, Test, Test and then
Test again!!!!
        5. Perform MS Exchange backup, recovery and contingency Testing - Test,
Test, Test and Test again!!!
        6. Add an MX record pointing to the MS Exchange Sever in DNS at a higher
precedence value
        7. Give all users a deadline to clean-up their Cyrus IMAP mailboxes
        8. Announce a maintenance window
        9. Turn-up MS Exchange Server
     10. Shutdown Cyrus IMAP Server
     11. Commence normal operations

Viola! You now have a volatile messaging environment!!

OCNS Consulting

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Jon McDanel
Sent: Thursday, August 30, 2001 6:02 PM
To: Quoc Vu; [EMAIL PROTECTED]
Subject: Re: Migration to Exchange
Importance: High


Depending on the number of users you are dealing with, a 'client-side'
migration might be your best bet.

Take this approach:

1.  Setup your Exchange server, make sure that everything is fully tested.
2.  Make changes to DNS for your domain MX records to point to the Exchange
server.
3.  After mail is getting delivered to the exchange server, temporarily
configure Outlook to connect to Exchange server and to Cyrus server (Outlook
does function as an IMAP Client too).  Move all the email (and folders) to
exchange hierarchy.

Obvious issues:

#1  Servers have to have different names and separate hardware
#2  Very painful for more than a couple dozen users
#3  Depends on users (or someone with a lot of time) to do a manual
migration.
#4  Outlook is going to be client used for connection to Exchange.  Although
Exchange does support IMAP, so any client could be configured to connect to
both servers using IMAP and migration could be done that way.


Have Fun !

/Jon






On 8/30/01 10:05 AM, "Quoc Vu" <[EMAIL PROTECTED]> wrote:

>
> Does anyone know of any way to migrate from the Cyrus to Exchange mail
> system?
>

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