Microsoft

Exchange: Associate an Offline Address List with a specific mailbox

Here's a quick tip on how to override global offline address settings in Exchange.

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Typically, every mailbox in an information store uses the same global Offline Address List settings. However, there may be times when you want to associate one or more mailboxes with a different Offline Address List.

This requirement most often develops in environments that host multiple companies. While you could work around this issue by placing users in different information stores, this isn't always convenient—and there's a better way to do it.

You can override the global offline address settings for the information store by using ADSI Edit (or some other LDAP version 3 client) to modify the msExchUseOAB attribute of the users you wish to associate with a different Offline Address List. Replace the default global settings with the full distinguished name of the Offline Address List that you want to use.

As with any change of this nature, make sure that you perform full, verified backups before beginning the process. If something goes wrong, you'll certainly want to be able to recover Active Directory.

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