Adding second Exchange 2010 server, error installing CAS role.


I currently have an Exchange 2010 server setup and running well.  I need to add in a second Exchange server that will become my main exchange server while the current will have exchange removed.  

I can install all roles except the CAS role.

I have tried installing it with the external address filled in and without.  Each time the error that states it cannot find the Public Folder Database, which lives on the other exchange server, and to check that I typed it correctly.  It's strange because I never get to specify where the database is located.  The two servers seem to be communicating just fine.  I even went as far as mapping a drive directly to where the Public Folder Database is located.

I'm not sure what else to try.  I've looked into IIS and dont see anything unusual there and both servers are Domain Controllers with current copies of the GC.

Any advice you have will be much appreciated.
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CYSAdminConnect With a Mentor Author Commented:
Unfortunately your idea did not work.  It was already assigned the public folder database.  What I found out was that there were some remnants leftover from the switching from Exchange 2003 to Exchange 2010.  Apparently the Folder Hierarchy folder (which contains the Public Folders entry) was never transfered.  I had to recreate it and change the msExchangePFTree attributes.

I tried many things before figuring this out, but what seemed to finally fix it was following this guide in recreating the Folder Hierarchy entry and disabling the old Hierarchy.
Actually I do not know why CAS role asks for the PF database but may you can solve it if you assign a default pf database to the mailbox database on the new server if it is not assigned already. Go to EMC -> Organzation Configuration -> Mailbox. Select the database management tab, then right-click the desired mailbox database, select Properties and go to the Client settings tab. Here you can browse for the PF database you want to use for mailboxes in that mailbox database.

I think CAS asks for a PF database when you tell the installer that you will use Outlook 2003 or something because it requires PF.

Hope this helps.
CYSAdminAuthor Commented:
Fixed it myself using the guide posted in the previous comment.
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