Cannot connect to Exchange

We are running SBS 2011 on a Dell R420. I had to switch from a software RAID to a hardware RAID controller. Due to poor performance. I created a Windows Server Backup. Installed the new controller and re-imaged from the backup. The server seems to be working fine and mail flow is working, but all of the users cannot connect to the exchange server. On users PC's I have tried to repair the Outlook account and I tried creating a new profile. Both of which seem to work, but when opening Outlook it does not connect.
cmitsolutionsAsked:
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Edward ChoManaging Exciting Technology ThingsCommented:
Just wondering, does it have the same IP as the previous server (assuming it does since it's the same server).  If not, then was the DNS records updated to reflect the new IP?

Do you have any errors in your Event Log on the Exchange server?  Which version of Exchange are you running?
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cmitsolutionsAuthor Commented:
Yes the IP address is the same. Exchange 2010. Yes i see Event ID 7011 (A timeout (90000 milliseconds) was reached while waiting for a transaction response from the MSExchangeRPC service.)
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Edward ChoManaging Exciting Technology ThingsCommented:
Are all the Exchange services running on the server?  Can you post a detailed message of that event log error?
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Addy NadiaExpertCommented:
Hi,

Can you please Confirm, there are some users that are facing issue?, Also confirm are users facing any problem while accessing mailbox in OWA.
In outlook  can you please try to test by uncheck the Cache Mode.

Also in outlook, also check Test-Email auto configuration and see , what results are showing there ?

Thanks,
Andy
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cmitsolutionsAuthor Commented:
All services were running. I stopped and started the Microsoft Exchange RPC Client Access service. Outlook is now able to connect to the Exchange Server.
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Edward ChoManaging Exciting Technology ThingsCommented:
Glad to hear everything is up and running.  Wonder what the root cause was though...
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Addy NadiaExpertCommented:
Perfect. All is up and running
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