Client Referral Considerations for Mixed Mode
Topic Last Modified: 2005-05-06
Each user has an associated default public folder store. If the users default public folder store resides on an Exchange Server 5.5 server, the user is routed according to the Exchange Server 5.5 public folder affinity configuration.
If the user's default public folder store resides on an Exchange Server 2003 server, the user is routed according to the Exchange Server 2003 referral configuration as described in "Understanding Public Folder Referrals" in the Exchange Server 2003 Administration Guide. By default, Exchange Server 2003 referrals follow the routing topology. You can override this using a specified list of servers for referrals.
When determining whether you need to modify the default referral or affinity configurations, remember the following:
Microsoft Office Outlook Web Access for Exchange Server 2003 cannot view public folder content replicas that reside on computers running Exchange Server 5.5.
By default, the Do not allow public folder referrals option is not selected for a connector between an Exchange Server 2003 or Microsoft Exchange 2000 Server routing group and a routing group that contains computers running Exchange Server 5.5 by default. (For details, see the following figure.) This configuration means that Exchange may refer users to servers in remote routing groups.
The default setting is appropriate for such a connector in most circumstances.
Note: Outlook Web Access users cannot view public folder content that resides on computers running Exchange Server5.5. The Do not allow public folder referrals option does not affect these users.
|Depending on how you have configured public folder referrals, users may undergo permissions checks several times while accessing a single public folder. Each public folder server has a copy of the permissions of all folders in the tree. Every time that the user accesses a public folder server, that server checks permissions before either granting access to a local replica or referring the user to another server.|
For more information about configuring referrals, see "Understanding Public Folder Referrals" in the Exchange Server 2003 Administration Guide.