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Our office server is SBS 2003 with ISA 2004. We've migrated all users over to O365. All smartphones and tablets have been setup using autodiscover.
When I try to setup a desktop Outlook 2010 computer the setup comes back with "An encrypted connection to your secure server is not available" I've tried entering the manual setup to which I get the same error. I've setup my home computer with the same manual entries and Outlook works fine.
Do I need to create a new policy in ISA server to allow secure connections?
I ran Remote Connectivity Analyzer and it returned "Connectivity Test Sucessful" for the autodiscover test.
I went thru ISA to make sure the ports were open and had to open a couple but I still could not use autodiscovery to setup outlook. At one point in the installation the email server address came back to our exchange server. DNS!! I checked our internal dns server and sure enough there was a forward lookup zone using the same domain that pointed back to the server. With caution I removed the A record. Now everything works fine.
thanks much for the advice.
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