When Exchange 2013 is installed, a number of arbitration mailboxes are created. In Exchange 2010 for example, the Generation Server property of the OAB indicated which particular mailbox server was configured to generate it. How the OAB is generated in Exchange 2013 has changed when compared to previous versions of Exchange. For Exchange 2013, OAB version 4 supports Outlook client versions from Outlook 2007 upwards.įigure 1-2: Client Support Options in the Exchange 2013 OAB Arbitration Mailboxes and OAB Generation Here, it can be seen that only version 4 of the OAB is provided. Figure 1-2 shows the details of the OAB properties in Exchange 2013, as retrieved using the Get-OfflineAddressBook cmdlet and filtering for the Versions parameter. This client support functionality for an Exchange 2010 server can be seen in Figure 1-1.įigure 1-1: Client Support Options in the Exchange 2010 OABĬompare Figure 1-2 below with Figure 1-1 above.
It was possible for the Exchange administrator to select which versions were made available for clients to use. For example, the OAB versions generated included version 2 for Outlook 98 SP1 or earlier clients, version 3 for Outlook 98 SP2 or later clients, and version 4 for Outlook 2003 SP2 or later clients. In previous versions of Exchange, different versions of the OAB were generated and made available to clients. In this article, these changes will be discussed in more detail. Web-based distribution is the only supported distribution method.The OAB generation schedule control is different.
OAB generation is no longer tied to a specific mailbox server.OAB version 4 is now the only version generated.These need to be understood by anyone responsible for the architecture of an Exchange 2013 deployment as well as the ongoing administration of this deployed infrastructure. There have been many improvements in the Exchange Offline Address Book (OAB) architecture, configuration and processes in Exchange 2013 when compared to Exchange 2010.
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