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Enterprise Software Thread, Outlook Web App 2010 - The server operation timed out. Please try again later in Technical; It was a trusted site but I've now set that in Group Policy so it will be applied. I can't ...
  1. #16

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    It was a trusted site but I've now set that in Group Policy so it will be applied. I can't add it as a proxy exception becuase we use the external URL to access OWA. Staff have reported freezing (but no errors) when using the Internal URL.

  2. #17

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    so has adding it trusted site fixed the issue or was it already in there?

    accessing OWA internally, is that a seperate issue from your original post?

  3. #18

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    I don't know if adding it as a trusted site fixed it. I will found out today.

  4. #19
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    if staff are using the external address, cant you try adding a new local dns record and point that to the owa site so staff are still using the external link but traffic is only staying on the internal network because it sounds like there are going out externally to access the site which is internally hosted

  5. #20

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    Quote Originally Posted by ful56_uk View Post
    if staff are using the external address, cant you try adding a new local dns record and point that to the owa site so staff are still using the external link but traffic is only staying on the internal network because it sounds like there are going out externally to access the site which is internally hosted
    I could do, but how?

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    Create a record in your internal dns for, cname pointing to your external url.

    You're still hitting the same CAS, that's why you have two URL's.

    As a test can you point the clients to the 2nd CAS?

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    Quote Originally Posted by adamf View Post
    I could do, but how?
    Add a new authoritive zone in your local DNS server for mail.yourschool.external then add an A record into it with no name (making it the default responce) pointing to the internal IP of your Exchange server.

  8. Thanks to SYNACK from:

    adamf (15th March 2011)

  9. #23

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    It appears adding a new authoritive zone has not fixed the problem... Any other suggestions?

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    Have you tried your second CAS?

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    I could change the dns zone I setup yesterday to point to the other CAS server - this would only work internally as to make the change work externally would mean submitting a change request to our ISP.

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    My reasonsing, is that I am trying to rule out CAS server and try and focus on the issue.

    If we can point to the other CAS server and perform some tests, this will at least indicate an issue with the CAS rather than users. There's a few tests we will have to do, from the client end as usual, new user, new PC, exisiting user, existing PC etc..

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    Pointing to the other CAS server hasn't fixed the issue. In terms of tests at the client end, there isn't much we can do, it seems to be effecting most staff and we have a variety of different hardware that we are seeing the problem on.

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    This error message has started to appear on machines today (see screenshot)

    http://i51.tinypic.com/ddgab4.jpg

    Any ideas?

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    can you up the logging to at expert/verbose on the CAS and reproduce the problem. Then check event logs.

    MSExchange OWA\Core
    MSExchange OWA\Configuration
    MSExchange OWA\Proxy

    Few other things you can try.

    1. Start Windows in safe mode with networking and test OWA.
    2. Disable Add-ins in IE
    3. Start IE in safe mode
    4. Run test-owaconnectivity for a problem user several times and check latency/errors.
    5. If all fails, I think it may be worth doing a network capture. Use Netmon to perform the capture, on the server and client and reproduce problem.
    Last edited by sukh; 18th March 2011 at 02:10 AM.

  16. #30

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    I've changed the diagnostic logging on the above to expert, the problem has been reproduced by staff but I am seeing nothing of any significance in the event logs.

    I haven't tried all of the above steps yet, but running test-owaconnectivity a few times produced figures between 78ms and 93ms but occassionally spiked to 350 or 400ms then returned to around 78-93ms



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