Hello All, We have Parent-Child architecture of Active Directory. We have two exchange server 2003, one in both parent and child domains. I don't have any Front End exchange server. Both exchange servers are configured for RPC over HTTP feature. The users of parent domain exchange server are able to use the RPC over HTTP feature. But users who are in child domain and mailboxes on the exchange of child domain are not able to connect using RPC over HTTP. I have followed all the steps of configuring this in the second server which are mentioned on the Microsoft site. These users when try to use this feature, they get the message that the server is unavailable. We have separate OWA url for both the domains exchange server. Can somebody help me in this issue.

Hi Amit, Try to use www.testexchangeconnectivity.com website and see at what step the request is getting stuck? Also let us know if you see any application or security logs related to RPC over HTTPS that are generated in your event viewer?

Dear customer: To proper assist you to accomplish RPC over HTTP configuration, please help collect the following information: 1. What version is your second Exchange server that resides in the child domain? 2. Is your second Exchange server that resides in the child domain a Global Catalog server? 3. Open ESM, navigate to second Exchange server, right click it and select properties, click RPC-HTTP tab, send the screenshot of it to v-rocwan@microsoft.com for analyze. If the second Exchange server isnt a Global Catalog server, you can refer to the following article to configure RPC over HTTP. How to Deploy RPC over HTTP for the First Time on Exchange Server 2003, No Front-End Server http://technet.microsoft.com/en-us/library/bb124671(EXCHG.65).aspx If the second Exchange server is a Global Catalog server, you can refer to the following article to configure RPC over HTTP. How to Deploy RPC over HTTP for the First Time on Exchange Server 2003, No Front-End Server, Back-End on Global Catalog Server http://technet.microsoft.com/en-us/library/bb125001(EXCHG.65).aspx Note: when you send e-mail to me, please add the subject of the post. Hope it helps. If anything is unclear, please feel free to let me know. Rock Wang - MSFT

Below are the answers to your queries: 1) Exchange 2003 version 6.5 (Build 7638.2: service Pack 2) 2) On the child domain, the domain controller and exchange server are on different server. The DC has been enabled for Global catalog. The exchange is the part of child domain butthe parenet exchange and child exchange areboth the member of the same Organization 3) Screen shot sent in the email I had followed all the steps mentioned in http://technet.microsoft.com/en-us/library/bb124671(EXCHG.65).aspx Kindly help Regards, Amit

Hello Harpreet, I used the tool, but it failed at the Testing SSLCertificate for validity. I don't see any errors in the application or security log when I try to connect. please help me

Pajji tussi great ho. Using your link I figured out it was a certificate issue. I configured a new certificate for the second server and it worked fine. Thanks for the help

Hi Amit, I am glad that the issue is resolved. Remember that link as its very useful when it comes to RPC over HTTPS and ActiveSync Issues. Harpreet