Problem with SSL Certification

Hi people,

I'm new to exchange server, and get some problems with my SSL certification i did't make when and work fine on https://xxxxx.com/owa. But when i run it on my outlook they come with "name on securecertifcation is invalid ..."

	Attempting the Autodiscover and Exchange ActiveSync test (if requested).
	Autodiscover was successfully tested for Exchange ActiveSync.
	Additional Details
	Test Steps   Attempting each method of contacting the Autodiscover service.   The Autodiscover service was tested successfully.   Additional Details   Test Steps   Attempting to test potential Autodiscover URL https://xxxxxxx.dk:443/Autodiscover/Autodiscover.xml   Testing of this potential Autodiscover URL failed.   Additional Details   Elapsed Time: 961 ms.   Test Steps   Attempting to resolve the host name xxxx.dk in DNS.   The host name resolved successfully.   Additional Details Testing TCP port 443 on host xxxxxx.dk to ensure it's listening and open.   The port was opened successfully.   Additional Details Testing the SSL certificate to make sure it's valid.   The SSL certificate failed one or more certificate validation checks.   Additional Details   Test Steps   The Microsoft Connectivity Analyzer is attempting to obtain the SSL certificate from remote server xxxxx.dk on port 443.   The Microsoft Connectivity Analyzer successfully obtained the remote SSL certificate.   Additional Details Validating the certificate name.   Certificate name validation failed.    <label for="testSelectWizard_ctl12_ctl06_ctl00_ctl00_ctl02_ctl01_tmmArrow">Tell me more about this issue and how to resolve it</label>   Additional Details Attempting to test potential Autodiscover URL https://autodiscover.xxxxxx.dk:443/Autodiscover/Autodiscover.xml   Testing of this potential Autodiscover URL failed.   Additional Details   Test Steps   Attempting to resolve the host name autodiscover.xxxx.dk in DNS.   The host name resolved successfully.   Additional Details Testing TCP port 443 on host autodiscover.xxxxx.dk to ensure it's listening and open.   The port was opened successfully.   Additional Details Testing the SSL certificate to make sure it's valid.   The SSL certificate failed one or more certificate validation checks.   Additional Details   Test Steps Attempting to contact the Autodiscover service using the HTTP redirect method.   The attempt to contact Autodiscover using the HTTP Redirect method failed.   Additional Details   Test Steps   Attempting to resolve the host name autodiscover.XXXXX.dk in DNS.   The host name resolved successfully.   Additional Details Testing TCP port 80 on host autodiscover.xxxxxxx.dk to ensure it's listening and open.   The port was opened successfully.   Additional Details The Microsoft Connectivity Analyzer is checking the host autodiscover.xxxx.dk for an HTTP redirect to the Autodiscover service.   The Microsoft Connectivity Analyzer failed to get an HTTP redirect response for Autodiscover.   Additional Details   An HTTP 403 forbidden response was received. The response appears to have come from Unknown. Body of the response:  HTTP Response Headers: X-FEServer: WIN-JGH2TDO5CN5 Content-Length: 0 Date: Wed, 23 Nov 2016 07:17:27 GMT Server: Microsoft-IIS/8.5 X-Powered-By: ASP.NET Elapsed Time: 530 ms. Attempting to contact the Autodiscover service using the DNS SRV redirect method.   The Microsoft Connectivity Analyzer successfully contacted the Autodiscover service using the DNS SRV redirect method.   Additional Details   Test Steps   Attempting to locate SRV record _autodiscover._tcp.xxxxxx.dk in DNS.   The Autodiscover SRV record was successfully retrieved from DNS.   Additional Details Attempting to test potential Autodiscover URL https://mail.xxxxx.dk:443/Autodiscover/Autodiscover.xml   Testing of the Autodiscover URL was successful.   Additional Details   Test Steps   Attempting to resolve the host name mail.xxxx.dk in DNS.   The host name resolved successfully.   Additional Details Testing TCP port 443 on host mail.xxxxx.dk to ensure it's listening and open.   The port was opened successfully.   Additional Details Testing the SSL certificate to make sure it's valid.   The certificate passed all validation requirements.   Additional Details   Test Steps Checking the IIS configuration for client certificate authentication.   Client certificate authentication wasn't detected.   Additional Details Attempting to send an Autodiscover POST request to potential Autodiscover URLs.   The Microsoft Connectivity Analyzer successfully retrieved Autodiscover settings by sending an Autodiscover POST.   Additional Details   Test Steps

My question is do I need buy one more SSL certification that are specific on autodiscover.xxx.dk or do I need to change my dns configuration ?  

Thank's :-)

ZS