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Easy Question - Setting the RPCClientAccessServer to the CAS Array

Posted on 2013-06-26
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Last Modified: 2013-07-02
I run Exchange 2010 in my domain. I need to figure out a way to set the RPCClientAccessServer to CasArray.domain.com

I've run this command:

Set-MailboxDatabase <mailbox db> -RpcClientAccessServer CasArray.domain.com

But client devices cannot connect when using Outlook (both internally and externally). My temporary solution has been to manually set the RPC a specific CAS server in the array.

Thank you!
J
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Question by:jmichaelpalermo4
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by:Amit
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Any HLB or NLB you are using?
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by:jmichaelpalermo4
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HLB
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by:jmichaelpalermo4
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I've created a split DNS entry pointing to the CAS Array, which is forwarded using Zen Load Balancer to forward the traffic.
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by:Amit
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You need to point this to your HLB not to you CAS Array name. So first you run

Run the command nltest /dsgetsite on server and get the site name

then create cas array
New-ClientAccessArray -Name anyname.yourdomain.com -Site "sitename" -Fqdn  hlbname.yourdomain.com

Then set the mailbox database
Get-MailboxDatabase -Server MailboxDBServername | Set-MailboxDatabase
-RpcClientAccessServer hlbname.yourdomain.com

Make sure you have configured CAS server in your HLB too.

Hope this helps.
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by:jmichaelpalermo4
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Ah yes, I've done that originally and it didn't work.

I set my DNS records to use mail.domain.com and pointed it to the IP of the load balancer, which points to the servers in the CAS Array.

Or, maybe I'm missing something?
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by:Simon Butler (Sembee)
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The CAS array name should be something that is UNIQUE to the CAS array and resolves internally only. It should not be in the external DNS and should not be in the SSL certificate or used for anything else.
After making the change to the databases etc, I would start by having the CAS Array address point directly the CAS role holder, to verify it works correctly.

Simon.
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by:jmichaelpalermo4
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Right - I'll get that fixed asap. Will changing the name of the existing CAS array cause any issues?

Thank you!
J
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by:jmichaelpalermo4
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Still no go. I've changed the CAS Array Name and FQDN to something internal and updated the DNS records accordingly.
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by:Simon Butler (Sembee)
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Did you repair the Outlook profile after making the change? The CAS array name change is NOT picked up by the clients automatically.

Simon.
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by:jmichaelpalermo4
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Yes, I tried to configure the client on a completely new PC, still no go
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by:Simon Butler (Sembee)
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I am not really sure what you are doing wrong here, as CAS Array is very easy:

Create DNS entry for the CAS Array host name.
Configure the CAS Array in Exchange using new-clientaccessarray.
Change the RPC Server setting on the database.

The only time I have seen problems is when AD Sites and Services isn't configured correctly and the server doesn't recognise which site it is in.

Simon.
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jmichaelpalermo4 earned 0 total points
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Found the issue, it was an autodiscover issue. There were multiple parts to this... My URLs (EWS, AVD, etc) for the CAS were set to the individual servers. Ran commands to set them to the correct URL.

But you led me to the right path, I had things not correctly configured.
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by:jmichaelpalermo4
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Figured out the issue myself, with direction from Sembee2
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