Decommission old Exchange 2007 mailbox server before all outlook clients update

We're nearing the end of an Exchange 2007 mailbox migration project. This was a hardware only refresh for the mailbox servers - Exchange 2007 to Exchange 2007.

All mailboxes have been migrated, we've moved the offline address book and public folders. Clients (Outlook 2007) are connecting successfully and being reconfigured with the new server address.

However, due to an office move, we can't leave the old Mailbox server running for much longer and I know a number of users haven't launched Outlook since their mailbox was moved (holiday etc).

What is the best/correct way to mange updating these remaining clients when we decommission the old mailbox server?
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Manpreet SIngh KhatraConnect With a Mentor Solutions Architect, Project LeadCommented:
Once Outlook connects if that Ol2k7 or Ol2k10 its smart enough to understand where its mailbox is and get autoconfigured .... if not most ideally it wouldnt but you will have to reconfigure the Ol profile.

Update an Outlook 2007 configuration by using the Office Customization Tool

- Rancy
Kernel_Recovery_ToolsConnect With a Mentor Commented:

Autodiscovery feature of Exchange 2007/Outlook 2007 might be helpful for you. After the old server has been decommissioned users can follow the steps as described here for auto-updating of the profile.


If you want to play safe, you can try this for a particular user after shutting down the old mailbox server, and then launching the Outlook profile. If it works fine, you can decommission the old server.
Simon Butler (Sembee)Connect With a Mentor ConsultantCommented:
The simple method to deal with this is to remove the old server completely, so remove Exchange using add/remove programs, and then drop the server from the domain.
Reconfigure DNS so that the server's name resolves to the new server.

Autodiscover should kick in when the old server isn't reachable, but using the above will get the clients to the correct place.

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