RPC over HTTPs: Unable to get Outlook 2003 SP2 clients to connect to Exchange 2003 SP2 FE.
I have setup a test enviornment with 3 virtual machines. They are all running 2003 R2, all updated. One is an Active Directory controller. The other two are a back end and front end running exchange 2003 SP2. The AD controller is also a CA. I have gone through the MS tutorials, trouble shooting, and even read other various articles on how to implement this using a FE\BE scenario. I issued myself an SSL cert, installed it on the FE webserver. I can get a secure connection for webmail and it works,but when it comes to RPC over HTTPs no luck. The client is definately sending traffic but it always comes back that it cant find the exchange server. I have NAT a public IP for the FE. I am blocking all traffic to this IP except HTTP, HTTPS, and the RPC over HTTP ports via my Sonicwall 4060. Is there any tricks of the trade I am missing? I thought it may be the SSL cert isnt from a trusted source so I installed it via IE7. And that didnt fix it. Any help is appreciated.
January 25th, 2008 10:28pm

Hi,I am having the exact same problem. Would you mind sharing any solutions or insights that you might have had meanwhile?Thanks!
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March 18th, 2008 8:24pm

I had this problem and had to call microsoft about it. The problem with us is the fact that on the frontend server we had to make sure the registry key was pointing to our backend server. Then we had to make sure the ports were correct in the registry on the frontend and backend servers. Once we did this everything worked great.
March 18th, 2008 10:24pm

Well interestingly enough I have concluded the portregistry hackis probably what is restricting it from working. Everything else works fine except RPC over HTTPS. However this is interesting. I followed a guide that had me edit a key in the registry called "ValidPorts". I entered in the information for the backend, the global catalog, and the public FQDN for the web address on the front end server. I enter the information and within 5 minutes something overwrites it with the information that was originally in the key. I thought maybe the key is limited to 256 characters. So I change it to a multi-word key and on the reboot it is rewritten with the original key. I am sure there is a simple explanation as to what or why the key is being overwritten. ThoughI dont have a clue hehe. The global catalog's key stuck just fine. edit: btw we bought an SSL cert from Godaddy.
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March 18th, 2008 10:34pm

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