Refer the below site. It may help you in resolving your problem. http://technet.microsoft.com/en-us/library/aa995928(v=exchg.80).aspx http://www.exchange-genie.com/2007/07/exchange-2007-autodiscover-service-part-1/ Run exchange best practice analyzer on server Run Get-AutodiscoverVirtualDirectory | fl and checked internal and external url

This seems to have resolved the issue. I cannot thank you enough for the suggestion! Thanks, Keith

Using the remote connectivity tester I get the following; Testing RPC/HTTP connectivity. The RPC/HTTP test failed. Test Steps ExRCA is attempting to test Autodiscover for kmagyar@xxxxxx.com. Autodiscover was tested successfully. Test Steps Attempting each method of contacting the Autodiscover service. The Autodiscover service was tested successfully. Test Steps Attempting to test potential Autodiscover URL https://xxxxx.com/AutoDiscover/AutoDiscover.xml Testing of this potential Autodiscover URL failed. Test Steps Attempting to resolve the host name xxxxxx.com in DNS. The host name resolved successfully. Additional Details IP addresses returned: xxxx.xxxx.xxxx.xxxx Testing TCP port 443 on host xxxxxx.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 ExRCA is attempting to obtain the SSL certificate from remote serverxxxxxx.com on port 443. ExRCA successfully obtained the remote SSL certificate. Additional Details Validating the certificate name. Certificate name validation failed. <label for="testSelectWizard_ctl12_ctl06_ctl00_ctl00_ctl00_ctl02_ctl01_tmmArrow">Tell me more about this issue and how to resolve it</label> Additional Details Host name xxxxxx.com doesn't match any name found on the server certificate . Attempting to test potential Autodiscover URL https://autodiscover.xxxxxx.com/AutoDiscover/AutoDiscover.xml Testing of this potential Autodiscover URL failed. Test Steps Attempting to resolve the host name autodiscover.xxxxxx.com in DNS. The host name couldn't be resolved. <label for="testSelectWizard_ctl12_ctl06_ctl00_ctl00_ctl01_ctl00_tmmArrow">Tell me more about this issue and how to resolve it</label> Additional Details Host autodiscover.xxxxxx.com couldn't be resolved in DNS InfoDomainNonexistent. Attempting to contact the Autodiscover service using the HTTP redirect method. The attempt to contact Autodiscover using the HTTP Redirect method failed. Test Steps Attempting to resolve the host name autodiscover.xxxxx.com in DNS. The host name couldn't be resolved. <label for="testSelectWizard_ctl12_ctl06_ctl00_ctl00_ctl02_ctl00_tmmArrow">Tell me more about this issue and how to resolve it</label> Additional Details Host autodiscover.xxxxxx.com couldn't be resolved in DNS InfoDomainNonexistent. Attempting to contact the Autodiscover service using the DNS SRV redirect method. ExRCA successfully contacted the Autodiscover service using the DNS SRV redirect method. Test Steps Attempting to locate SRV record _autodiscover._tcp.xxxxx.com in DNS. The Autodiscover SRV record was successfully retrieved from DNS. Additional Details The Service Location (SRV) record lookup returned host mail.xxxxxxxx.com. Attempting to test potential Autodiscover URL https://mail.xxxxxx.com/Autodiscover/Autodiscover.xml Testing of the Autodiscover URL was successful. Test Steps Attempting to resolve the host name mail.xxxxxx.com in DNS. The host name resolved successfully. Additional Details IP addresses returned: 67.222.116.164 Testing TCP port 443 on host mail.xxxxxx.com to ensure it's listening and open. The port was opened successfully. Testing the SSL certificate to make sure it's valid. The certificate passed all validation requirements. Test Steps ExRCA is attempting to obtain the SSL certificate from remote server mail.xxxxxx.com on port 443. ExRCA successfully obtained the remote SSL certificate. Additional Details Remote Certificate Subject: CN=xxxxxx.com, OU=Domain Control Validated, O=xxxxxx.com, Issuer: SERIALNUMBER=07969287, CN=Go Daddy Secure Certification Authority, OU=http://certificates.godaddy.com/repository, O="GoDaddy.com, Inc.", L=Scottsdale, S=Arizona, C=US. Validating the certificate name. The certificate name was validated successfully. Additional Details Host name mail.xxxxxx.com was found in the Certificate Subject Alternative Name entry. Certificate trust is being validated. The certificate is trusted and all certificates are present in the chain. Test Steps ExRCA is attempting to build certificate chains for certificate CN=xxxxxx.com, OU=Domain Control Validated, O=xxxxxx.com. One or more certificate chains were constructed successfully. Additional Details A total of 1 chains were built. The highest quality chain ends in root certificate OU=Go Daddy Class 2 Certification Authority, O="The Go Daddy Group, Inc.", C=US. Analyzing the certificate chains for compatibility problems with versions of Windows. Potential compatibility problems were identified with some versions of Windows. Additional Details ExRCA can only validate the certificate chain using the Root Certificate Update functionality from Windows Update. Your certificate may not be trusted on Windows if the "Update Root Certificates" feature isn't enabled. Testing the certificate date to confirm the certificate is valid. Date validation passed. The certificate hasn't expired. Additional Details The certificate is valid. NotBefore = 9/29/2010 8:03:56 PM, NotAfter = 9/29/2013 3:16:02 PM Checking the IIS configuration for client certificate authentication. Client certificate authentication wasn't detected. Additional Details Accept/Require Client Certificates isn't configured. Attempting to send an Autodiscover POST request to potential Autodiscover URLs. ExRCA successfully retrieved Autodiscover settings by sending an Autodiscover POST. Test Steps ExRCA is attempting to retrieve an XML Autodiscover response from URL https://mail.xxxxxx.com/Autodiscover/Autodiscover.xml for user kmagyar@xxxxxx.com. The Autodiscover XML response was successfully retrieved. Additional Details Autodiscover Account Settings Autodiscover settings for Outlook Anywhere are being validated. ExRCA validated the Outlook Anywhere Autodiscover settings. Attempting to resolve the host name mail.xxxxxxxx.com in DNS. The host name resolved successfully. Additional Details IP addresses returned: 67.222.116.164 Testing TCP port 443 on host mail.xxxxxx.com to ensure it's listening and open. The port was opened successfully. Testing the SSL certificate to make sure it's valid. The certificate passed all validation requirements. Test Steps ExRCA is attempting to obtain the SSL certificate from remote server mail.xxxxxx.com on port 443. ExRCA successfully obtained the remote SSL certificate. Additional Details Remote Certificate Subject: CN=xxxxxx.com, OU=Domain Control Validated, O=xxxxxx.com, Issuer: SERIALNUMBER=07969287, CN=Go Daddy Secure Certification Authority, OU=http://certificates.godaddy.com/repository, O="GoDaddy.com, Inc.", L=Scottsdale, S=Arizona, C=US. Validating the certificate name. The certificate name was validated successfully. Additional Details Host name mail.xxxxa.com was found in the Certificate Subject Alternative Name entry. Certificate trust is being validated. The certificate is trusted and all certificates are present in the chain. Test Steps ExRCA is attempting to build certificate chains for certificate CN=xxxxxx.com, OU=Domain Control Validated, O=xxxxxx.com. One or more certificate chains were constructed successfully. Additional Details A total of 1 chains were built. The highest quality chain ends in root certificate OU=Go Daddy Class 2 Certification Authority, O="The Go Daddy Group, Inc.", C=US. Alyzing the certificate chains for compatibility problems with versions of Windows. Potential compatibility problems were identified with some versions of Windows. Additional Details ExRCA can only validate the certificate chain using the Root Certificate Update functionality from Windows Update. Your certificate may not be trusted on Windows if the "Update Root Certificates" feature isn't enabled. Testing the certificate date to confirm the certificate is valid. Date validation passed. The certificate hasn't expired. Additional Details The certificate is valid. NotBefore = 9/29/2010 8:03:56 PM, NotAfter = 9/29/2013 3:16:02 PM Checking the IIS configuration for client certificate authentication. The test passed with some warnings encountered. Please expand the additional details. Additional Detail Client certificate authentication couldn't be determined because an unexpected failure occurred. WinHttpSendRequest failed with error 12002. Testing HTTP Authentication Methods for URL https://mail.xxxxxx.com/rpc/rpcproxy.dll. The HTTP authentication test failed. Additional Details This happened after a failed attemp to go to service pack 2. We have been having issues with w3svc service causing iis to lockup which is usually fixable by running iisreset or even rebooting. Please let me know what other information I can provide to help resolve this.

Hi You could try to reinstall the RPC Proxy component: http://technet.microsoft.com/en-us/library/dd776122.aspx. servermanagercmd -r rpc-over-http-proxy -> reboot -> servermanagercmd -i rpc-over-http-proxy Cheers, Steve