I've got two separate Exchange Organizations; all under the same forest. One organization is in one child domain, while the other is in another. One is running Exchange 2007, and the other Exchange organization is still running Exchange 2003. Both organizations use public folders. I've recently noticed that if I open a new appointment in Outlook and look at the availability of those users in the Exchange 2003 organization I cannot see their free busy information (I'm in the Exchange 2007 environment sorry). Why can I not see their free busy information? Do both organizations need to be running Exchange 2007, or am I missing something?

I dont think you mean two Exchange Organizations as you can only have 1 per forest. Do you mean you have 2003 servers and 2007 server coexisting in the same forest? 03 servers wont show up in the 07 console, however in the 03 system manager you can see the Administrative Group for the 07 servers and the server objects. Is this a wide spread problem or just a few users? Can 03 users see 07 users free busy?Chris Morgan

Yes, sorry two Exchange administrative groups. We're a mixed environment. We have a newer Exchange 2007 environment in one AD site, and the Exchange 2003 environment is in another (different) AD site. Both Sites/domains are members of the same AD forest. My own mailbox is on the Exchange 2007 side. All I know right now is I can't see the free busy information for those people with mailboxes on the Exchange 2003 side. Why can't I, and what can I do about it?

Hi, When accessing the free/busy of the users whose mailbox are on the Exchange 2003 from Exchange 2007 user, Availability service will look for a PF server where the E2K3 user belongs and try to get the free/busy by using HTTP. Thus, you should ensure the SSL is unchecked under Public VD on the Exchange 2003 server. Additionally, you can enable Outlook Logging on the client side, then try to reproduce this issue and check the Free/Busy log, find the error in there. Thanks AllenAllen Song

Hi, This problem occurs because there are no replicas of at least one Free/Busy folder in the Exchange Server 2007 organization. To resolve this problem, follow these steps In the Exchange Management Shell, run the following command: get-publicfolder -Identity "\NON_IPM_SUBTREE\SCHEDULE+ FREE BUSY" -Recurse | fl name,Replicas Notice that at least one of the SCHEDUE+ FREE BUSY folders is missing an Exchange 2010 or Exchange 2007 server listed as a replica. For example, the output may appear as follows: Name : EX:/o=contoso/ou=Exchange Administrative Group (FYDIBOHF23SPDLT) Replicas : {} In the Exchange Management Shell, run the following command: set-publicfolder -Identity "\NON_IPM_SUBTREE\SCHEDULE+ FREE BUSY\<Name of Folder>" -replicas "<Target PF Database>" For example, type: Set-publicfolder –identity "\NON_IPM_SUBTREE\SCHEDULE+ FREE BUSY\EX:/o=contoso/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)” –Replicas “Server\Storage Group\Public Folder Database” Verify that the public folder group now has a replica using the command from step 1. In the following example, the folder now has a replica object. Name : EX:/o=contoso/ou=Exchange Administrative Group (FYDIBOHF23SPDLT) Replicas : {Public Folder Database} Dinesh S.