Exchange 2010 - Autodiscover not working


On one of our Exchange deployments we found out that Autodiscover isn't working.
certificate exists and valid, ports 80,443 are opened.
I've tried to figure out the reason with and found out the following issue:

      An error message was returned from the Autodiscover service
XML response:
<?xml version="1.0"?>
<Autodiscover xmlns:xsd="" xmlns:xsi="" xmlns="">
<Error Time="01:18:31.3191359">
<Message>System.ApplicationException: Unable to determine destination Autodiscover URL for domain '' at AutodiscoverRedirectHandler.Handler.ProcessRequest(HttpContext context)</Message>
<DebugData />

Can you assist on this please?
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Shibu KuttanSenior Server AdministratorCommented:
Autodiscover is not configured, as simple as that.
In Outlook, press Ctrl + rightclick Outlook in system tray, choose "Test Email auto-configuration"
Give your email address and tick only "Use autodiscover" and run test.
It should display your OOF, OAB, etc, etc if autodiscover is configured correctly.

If not, please refer the following articles to configure it
cloudbaseAuthor Commented:
Fixed, it was an issue with the DNS.

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cloudbaseAuthor Commented:
Found out to be DNS issues
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