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Exchange 2010 Issue

Posted on 2011-10-12
Medium Priority
Last Modified: 2012-06-27
Hello!  We are in the process of migrating to Exchange 2010 from Exchange 2007.  I am having issues getting Outlook to connect to our Exchange 2010 CAS Array.

Current System setup:

Windows Server Enterprise 2008 SP2
Exchange Enterprise 2007 SP2 (CCR Environment)
2 Mailbox Servers
2 CAS/HUB Servers (on the same box)
4200 mailboxes

Windows Server Enterprise 2008 R2 SP1
Exchange Enterprise 2010 SP1 (DAG Environment)
Installed with Exchange 2010 SP1 DVD

Currently 1 Server with Mailbox/HUB/CAS rolls installed

Going to be reusing hardware above to create a 3 node DAG

Each server is on the same subnet.

We are using 2 CISCO 11500 load balancers that are configured with a virtual DNS name of email.

There is a certificate from our internal CA that has the load balancers Virtual name installed on the server.

We have single sign on setup and it works by going to  either  http://email/owa or http://email/ecp on http or https (with no security warnings) We do not allow external connection to OWA so this is all internal.

I have also set a new CAS Array in Exchange 2010 and then attached it to each database.  Under RpcClientAccessServer it gives the correct name.

Moving of mailboxes is not a problem and will stay connected to server until the transfer when everything changes and then says it will not connect.

When I open and manually configure outlook (2003, 2007 or 2010) and put “email” in there it does not want to verify.  I then put the DAG name in there and it autocorrects to email BUT will not connect because it says exchange is down.  If I put in JUST the server name and have it connect it works just fine.  So it is something with the CAS Array that is stopping the process.  

Any help would be greatly appreciated!
Question by:Sedgwick_County
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LVL 21

Expert Comment

by:Hendrik Wiese
ID: 36956969
Just a couple of questions:

1. Can you ping your cas array?
2. How many members are added to your array?
3. If there is more than 1, try disabling all and enabling one by one to see if there is not an issue on the cas server itself

Hope this helps!!

Author Comment

ID: 36956983
Yes I can ping the cas array and it pings just fine.  Currently there is only 1 server attached to the load balancer and the cas array since I will be reusing the hardware after the migration.  Thanks for the response!
LVL 21

Expert Comment

by:Hendrik Wiese
ID: 36957168
1. Is your cluster operation mode set to Multicast?
2. And host is started?
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LVL 24

Expert Comment

by:Rajith Enchiparambil
ID: 36959173
Is your CAS array IP pointing to your load balancer? If not, it should.

Author Comment

ID: 36959225
@HendrikWiese - Host is started and we are set to Unicast.

@rajith Enchiparambil - Yes, the Virtual IP for the cas array is pointing correctly.  It is also pingable.  The load balancer then points to the exchange server.  The windows firewall is also off on the server.

Expert Comment

ID: 36959597
Do you have the autodiscover DNS record created properly? You can use the Outlook 2010 Test Email Configuration feature to troubleshoot it. If you control-click the Outlook icon on your system tray and select it from the menu that pops-up.
From that same menu you can choose the Connection Status to see if Outlook is trying to connect to the right server/IP.


Author Comment

ID: 36961687
@amenezes0617 - We do not use the autodiscover feature with Exchange.  The main reason is our Outlook packages are built with the information programed into them so when it starts up it automatically knows where to go.

I have the issue when I manually put in the server information into the profile that is being created.  I do this by going to MAIL in the CONTROL PANEL then going to SHOW PROFILES and adding the profile there.  When it asks for server name I put in the CAS Array name.  I have even tried the DAG name for a test and it redirects it to the CAS Array name but says Exchange is not available.

Expert Comment

ID: 36963433
Did you check that the virtual servers on the load balancer are up and running properly?
What is the persistence type you setup for them?

Accepted Solution

Sedgwick_County earned 0 total points
ID: 36996725
We have figured out the issue.  It turned out that there was a registry setting incorrect on the Exchange server that points to a port on the Load Balancer.  So Outlook could not get through to connect.

REFERENCE:  http://technet.microsoft.com/en-us/library/ff625248.aspx

Author Closing Comment

ID: 37016643
Figured out the issue on our own.  Used Microsoft TechNet as a reference.


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