You receive a "0xC103798A" error message when you try to add a server that is running Exchange Server 2003 to an Exchange Server 5.5 site

When you try to add a server that is running Microsoft Exchange Server 2003 to a Microsoft Exchange Server 5.5 site, the Exchange Server 2003 Setup program cannot install the Exchange Server services and the Site Replication Service (SRS). Additionally, in Microsoft Exchange Installation Wizard, you receive an error message that is similar to the following:

This problem occurs if the Exchange Server 5.5 site name is changed after the Exchange Server organization is switched to a mixed environment. Therefore, the name of the Exchange Server 5.5 site that is used by the Exchange Server 2003 Setup program differs from the name of the corresponding Admin Group in Active Directory.

When this problem occurs, the following items appear to be correct:

�	DNS resolution
�	The properties of all objects in Active Directory
�	The properties of all objects in the Exchange Server 5.5 directory

To resolve this problem, change the Admin-Display-Name value of the Exchange Server 5.5 site to match the corresponding Admin Group object in Active Directory. To do this, follow these steps.

Warning If you use the raw mode of the Exchange Server Administrator program (admin /r) incorrectly, serious problems may occur that may require you to reinstall Microsoft Windows NT Server, Microsoft Exchange Server, or both. Microsoft cannot guarantee that problems that result from using raw mode incorrectly can be solved. Use raw mode at your own risk.

1.	Start Exchange System Manager.
2.	Note the name of the Admin Group that corresponds to the Exchange Server 5.5 site.
3.	Quit Exchange System Manager.
4.	On a computer that has Exchange Admin installed, click Start, click Run, type cmd, and then click OK.
5.	Type the following command, and then press ENTER: Drive:\exchsrvr\bin\admin /raw
6.	In Exchange Admin, locate the Exchange Server 5.5 site to which you want to add an Exchange Server 2003 server.
7.	On the File menu, click Raw Properties.
8.	In the Object attributes list, click Admin-Display-Name.
9.	In the Edit value box, type the name that you noted in step 2. Then, click OK.
10.	Quit Exchange Admin.

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

When this problem occurs, the Exchange Server 2003 setup log may contain the following information:

[17:09:43] Setting the 55 Server on the context to exch01
[17:09:43] About to attempt to read the 55 service account off the AG (SITE1)
[17:09:43] There was no AG in the AD, or no legacy svc account on the AD - so we will attempt to get the 55 Svc acct from the 55 server
[17:09:43] Attempting to read the 55 Service account from server (exch01)
[17:09:43] The 55 Service account read from server (??E) was (org\exservice)
[17:09:43] Setting the 55 service account on the Account object
[17:09:43] About to attempt to read the 55 service account off the AG (SITE1)
[17:09:43] There was no AG in the AD, or no legacy svc account on the AD - so we will attempt to get the 55 Svc acct from the 55 server
[17:09:43] Attempting to read the 55 Service account from server (exchop01)
[17:09:44] The 55 Service account read from server (??E) was (org\exservice)
[17:09:44] Setting the 55 service account on the Account object
[17:09:44] We have detected an existing Org, we will attempt to discover whether a mixed admin group and/or SRS requires the 5.5 account info
[17:09:44] Checking to see if this admin group contains any 5.5 servers
[17:09:44] ScRandomlyFindA55ServerNameInAG() returned ERROR_DS_NO_SUCH_OBJECT, which means the AG is empty
[17:09:44] We found no 5.5 servers, so this is not a true mixed AG
[17:09:44] However, if the SRS is enabled, then we will need the password anyway
[17:09:44] The SRS will not be enabled.
[17:09:44] There are no 5.5 server on the site. About to check is the site in the mixed mode.
[17:09:44] ScGetAdminGroupModeForSite (f:\titanium\admin\src\libs\exsetup\exmisc.cxx:5304)
Error code 0X80072030 (8240): There is no such object on the server.
[17:09:44] ScDetermineIfMixedAdminGroupOrSRSRequires55ServiceAccount (f:\titanium\admin\src\udog\excommon\ptudutil.cxx:1893)
Error code 0X80072030 (8240): There is no such object on the server.
[17:09:44] CComExchSetupComponent::HrDetectIfAccountPageShouldBeShown (f:\titanium\admin\src\udog\bo\comboifaces.cxx:6445)
Error code 0X80072030 (8240): There is no such object on the server.
[17:09:44] CComExchSetupComponent::QueryService (f:\titanium\admin\src\udog\bo\comboifaces.cxx:509)
Error code 0X80072030 (8240): There is no such object on the server.