Exchange 2010 - OWA stopped working

We recently installed Exchange 2010 and everything was working well including the owa access. We encountered some problems with log files filling up the drive and after dealing with that issue we can no longer access the Exchange server via owa. Please see the attached file.
GeneratorAsked:
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MaheshConnect With a Mentor ArchitectCommented:
Check all exchange OWA related services on CAS servers
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GeneratorAuthor Commented:
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Michael OrtegaConnect With a Mentor Sales & Systems EngineerCommented:
Looks like you're running SBS (2011?). Did OWA go down as a result of the log files filling up your volume?

Have you checked all services that are set to automatically start on the SBS? Have you tried an iisreset from command line? Is OWA accessible internally from your SBS? (try https://localhost/owa from your server).

MO
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GeneratorAuthor Commented:
OWA went down after the log files filled the volume. OWA is not accessible internally - get the same error message. The iisreset did not solve the problem. The logging problem was fixed by changing to circular logging.
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Patrick BogersConnect With a Mentor Datacenter platform engineer LindowsCommented:
In the error you were advised to include the customerror= Off. Once you do this what does the error page show now?
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Michael OrtegaSales & Systems EngineerCommented:
Can you access OWA via standard HTTP (internally)?

MO
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GeneratorAuthor Commented:
http - I get a HTTP Error 403.4 - Forbidden
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Michael OrtegaSales & Systems EngineerCommented:
Ok, that's actually by design. I don't think you can access OWA (Exchange 2010) without SSL/HTTPS unless you go into IIS and change some things.

MO
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GeneratorAuthor Commented:
Would this problem be related to the "web.config" file?
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Patrick BogersDatacenter platform engineer LindowsCommented:
Did you try my suggestion?
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GeneratorAuthor Commented:
Not sure where I should add that line.
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Patrick BogersDatacenter platform engineer LindowsCommented:
In your pdf it is the first yellow position.
In other words directly under the first <system.web>

Be aware, the line is case sensitive.
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Olaf De CeusterConnect With a Mentor Commented:
IF you are running SBS 2011 please run the BPA for help  or suggestions with this.
http://support.microsoft.com/kb/2673284
Hope that helps,
Olaf
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Krishna PatilConnect With a Mentor Commented:
Take backup of web.config file.
Rename existing web.config.bak file to web.config and restart IIS
Check owa.
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cpmcomputersConnect With a Mentor Commented:
Find you try the "fix my network"
Wizard from the sbs console ?
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