Exchange Test of RPC over HTTP fails

WS2008sp2, Ex2010sp1
Tests via TestExchangeConnectivity.
SSL configured to be used against mail, owa & autodiscover domain names.
Exchange autodiscover passes OK.
Tests via the RPC over HTTP fail on the last step trying to access oxa.mydomain.com.
Testing TCP port 443 on host oxa.mydomain.com to ensure it's listening and open.
  The port was opened successfully.
 Testing the SSL certificate to make sure it's valid.
  The SSL certificate failed one or more certificate validation checks.
   Test Steps
   Validating the certificate name.
  Certificate name validation failed.

 
The autodiscover return the server
<Type>EXPR</Type>
<Server>oxa.mydomain.com</Server>
<ASUrl>https://mail.mydomain.com/ews/exchange.asmx</ASUrl>
<OOFUrl>https://mail.mydomain.com/ews/exchange.asmx</OOFUrl>
<OABUrl>https://mail.mydomain.com/OAB/2de987c8-ef6b-4c88-b7f7-65e340fc8218/</OABUrl>
I assume this should be returning either the mail or the owa subdomain.  What have I configured incorrectly as I cannot seem to find references to oxa.mydomain.com in the Ex2010 config?
robc00Asked:
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arshanaCommented:
This seems like an certificate certificationissue. Have you purchased the certificate or is self generated. TestExchangeConnectivity.com  does not recognize self generated certificates hence it gives an error. If your OWA and Outlook Anywhere are functioning well you don't have to worry.
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robc00Author Commented:
I found the setting - Server Configuration - Properties - Outlook anywhere, why it was set to oxa.mydomain.com I dont know, changed to mail.mydomain and it clears the test.
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arshanaCommented:
may be oxa is the name of ur cas server
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robc00Author Commented:
Solved - found the settings
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