Exchange 2007: Autodiscover SSL certificate warning in Outlook

I imported my Active Directory Public SSL certificate onto my Samsung I600 mobile to sync my Exchange mailbox securely. After I imported the SSL certificate into IIS, my Outlook 2007 client displayed the following Security Alert:

The message appeared twice each time I opened Outlook. I found a post on the MSExchange team blog that referred me to Knowledge Base article 940726.

Update the commands below with your new FQDN and server identity, then open the Exchange Management Shell and paste them.

1
2
3
4

Set-WebServicesVirtualDirectory -Identity "Server\EWS (Default Web Site)" -InternalUrl https://mail.networknet.nl/ews/exchange.asmx
Set-OABVirtualDirectory -Identity "Server\oab (Default Web Site)" -InternalUrl https://mail.networknet.nl/oab
Set-UMVirtualDirectory -Identity "Server\unifiedmessaging (Default Web Site)" -InternalUrl https://mail.networknet.nl/unifiedmessaging/service.asmx
Set-ClientAccessServer -Identity Server -AutodiscoverServiceInternalUri https://mail.networknet.nl/autodiscover/autodiscover.xml

Restart IIS with iisreset, or recycle the MSExchangeAutodiscoverAppPool application pool if the server is used in production.

The Outlook 2007 warnings stopped in my Exchange 2007 test environment.