Can an Exchange 2007 maiboxdatabase use a 2010 CASArray as an RPCClientAccessServer?

Posted on 2015-01-05
Medium Priority
Last Modified: 2015-01-08
I have installed client access array in exchange 2010 and have an existing exchange 2007 Single-server-setup. The plan is to keep the mailboxdatabase in the 2007 environment and use the exchange 2010's as its clientaccess-servers.

I created a testdatabase on the 2007 and is trying to get it to point at the 2010 casarray. but when i from the 2010 server runs the command: set-mailboxdatabase testdb -RpcClientAccessServer exchcas.domain.local
i receive this error:
Property RpcClientAccessServerExcha<wbr ></wbr>ngeLegacyD<wbr ></wbr>N can't be set on this object because it requires the object to 
have version 0.10 ( or later. The object's current version is 0.1 (8.0.535.0).
    + CategoryInfo          : NotSpecified: (0:Int32) [Set-MailboxDatabase], InvalidObjectOperationExce<wbr ></wbr>ption
    + FullyQualifiedErrorId : BB1AD76B,Microsoft.Exchang<wbr ></wbr>e.Manageme<wbr ></wbr>nt.SystemC<wbr ></wbr>onfigurati<wbr ></wbr>onTasks.Se<wbr ></wbr>tMailboxDa<wbr ></wbr>tabase

Open in new window

I tried manually editing the servername in the LegacyExchangeDN attribute for testdb using ADSI Edit. By doing this i get the correct RPCClientAccessServer when i run get-maiboxdatabase exchange2007 | fl name,rpcclientaccessserver However i am not able to open any mailboxes in this database
Question by:lartof

Assisted Solution

by:Zacharia Kurian
Zacharia Kurian earned 600 total points
ID: 40531137
Read the below MS Article which will clarify all your queries;


My suggestion from the experience is to completely migrate to Exchange 2010 and this is to avoid future issues, glitches etc..

Make sure to have exchange 2010 SP3 with rollup 7.
LVL 63

Accepted Solution

Simon Butler (Sembee) earned 900 total points
ID: 40531145
Short answer - no.
The client will be redirected to the Exchange 2007 server because there is where the mailbox is located.
You get no benefit from deploying Exchange 2010 servers for CAS for Exchange 2007, because they will simply redirect.
The proxy/redirection article from TechNet is probably a better tool to understand for this:

"Proxying is supported for clients that use Outlook Web App, Exchange ActiveSync, the Exchange Control Panel (ECP), POP3, IMAP4, and Exchange Web Services. "

That does NOT include the Outlook client.

The RPC CAS Array should be used for Outlook RPC traffic ONLY. Nothing else.


Author Comment

ID: 40537717
Thanks for your replies, we are migrating everything to 2010.

Featured Post

Easily manage email signatures in Office 365

Managing email signatures in Office 365 can be a challenging task if you don't have the right tool. CodeTwo Email Signatures for Office 365 will help you implement a unified email signature look, no matter what email client is used by users. Test it for free!

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

There are literally thousands of Exchange recovery applications out there. So how do you end up picking one that’s ideal for your business & purpose? By carefully scouting the product’s features, the benefits it offers you, & reading ample reviews f…
Migrating Exchange data from one Exchange Server to another server is complicated. Though Exchange administrators can try manual methods to migrate their data from one version of Exchange to another, these manual methods are not that reliable. That…
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an antispam), the admini…
To export Lotus Notes to Outlook PST or Exchange and Domino Server files to Exchange Server or PST files with ease, go for Kernel for Lotus Notes to Outlook conversion tool. Through the video, you can watch the conversion process. A common user with…

624 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question