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Managing Edge Subscriptions

 

Applies to: Exchange Server 2007 SP3, Exchange Server 2007 SP2, Exchange Server 2007 SP1, Exchange Server 2007

Topic Last Modified: 2007-06-19

This topic provides information and links to the relevant topics in this section that will help you manage the Edge Subscriptions in your Microsoft Exchange Server 2007 organization.

The Edge Subscription process is the procedure that an administrator follows to establish an Edge Subscription for an Edge Transport server. You subscribe an Edge Transport server to an Active Directory directory service site to associate the Edge Transport server with the Exchange organization. After the Edge Transport server is subscribed, the Microsoft Exchange EdgeSync service periodically replicates recipient and configuration data from Active Directory to the Active Directory Application Mode (ADAM) instance on a computer that has the Edge Transport server role installed.

noteNote:
Microsoft Exchange Server 2007 Service Pack 1 (SP1) supports deployment of server roles on a Windows Server 2008 computer. If the Edge Transport server is installed on Windows Server 2008, ADAM is replaced by Active Directory Lightweight Directory Services (AD LDS). Windows Server 2008 includes several features that have been enhanced or renamed. For information about the feature changes between Windows Server 2003 and Windows Server 2008, see Terminology Changes.

The Microsoft Exchange EdgeSync service is the data synchronization service that runs on a Hub Transport server. The Microsoft Exchange EdgeSync service that is running on the Hub Transport servers in the Active Directory site to which the Edge Transport server is subscribed periodically performs one-way replication of recipient and configuration data to ADAM. The Microsoft Exchange EdgeSync service copies only the information that is required for the Edge Transport server to perform anti-spam configuration tasks, and information about the Send connector configuration that is required to enable mail flow between the Exchange 2007 organization's Hub Transport servers and the Internet through one or more Edge Transport servers. The Microsoft Exchange EdgeSync service performs scheduled updates so that the information in ADAM remains current.

An Edge Subscription doesn't require periodic maintenance. However, the following tasks may be performed to manage Edge Subscriptions:

  • Force EdgeSync synchronization   If you have made significant changes to the recipients or configuration in Active Directory, you may want to start the Microsoft Exchange EdgeSync service to synchronize immediately, instead of waiting for the scheduled replication interval.

  • Remove an Edge Subscription   If an Edge Transport server is being decommissioned you can remove the Edge Subscription. You must also remove and recreate an Edge Subscription if you want to change the Active Directory site association. The Edge Subscription must be removed from only the Exchange organization.

  • Resubscribe an Edge Transport server   If Hub Transport servers are added to an Active Directory site after an Edge Subscription to that site is created, they do not participate in the EdgeSync synchronization process. To have those servers participate in the EdgeSync synchronization process, you must resubscribe the Edge Transport server. You must also resubscribe the Edge Transport server if errors occur during authentication of the EdgeSync replication account credentials.

    importantImportant:
    To resubscribe an Edge Transport server, export a new XML file on the Edge Transport server and then import the XML file on a Hub Transport server. You must resubscribe the Edge Transport server to the same Active Directory site to which it was originally subscribed. You do not have to first remove the original Edge Subscription. The resubscription process will overwrite the existing Edge Subscription.
  • Test Edge synchronization   You can use the Test-EdgeSynchronization cmdlet in the Exchange Management Shell to validate that Active Directory and ADAM are synchronized.

    noteNote:
    If you have installed Exchange 2007 SP1, you can also use the Test-EdgeSynchronization cmdlet to verify the synchronization status of a single recipient.
 
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