Question : RPC over HTTP wont work after reinstall of IIS and Exchange 2003

I have been running RPC over HTTP fine (without certificates) for the last two years on my standalone 2003 Server Standard w/Exchange 2003 Enterprise SP2. Last night my exchange server experienced some SMTP problems which required me to reinstall IIS and Exchange 2003. I restored the metabase files in IIS and followed microsoft's instructions to restore the server. Everyhthing works fine (OWA, ActiveSync) except for RPC/HTTP. I get a password prompt but cannot login in like I normally did with my domain/username and P/W when i am off and on the network.

To troubleshoot I uninstalled the HTTP/RPC service then reinstalled the component, configured the virtual directories security permission as advised, and configured the registry keys using the RPCNOFRONTEND utility. Also configure ESM with the appropriate settings - still no dice.

Been working on this for hours and am going nuts trying to figure out what i am missing...Any suggestion would be much appreciated! I got this working before..not sure what is blocking it from working again....

Thanks,
-Travis

Answer : RPC over HTTP wont work after reinstall of IIS and Exchange 2003

Finally figured out what the problem was and got it working without using SSL :) It was a longshot but i tried this registry hack posted on technet

http://technet.microsoft.com/en-us/library/bb124604(EXCHG.65).aspx

Wish i would have found this 10 hours ago! Basically I followed these directions and manually added a new key...hope this helps out anyone else with a similar issue.
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To configure the RPC proxy server to allow for SSL offloading on a separate server
On the RPC proxy server, start Registry Editor (Regedit).

In the console tree, locate the following registry key:

HKEY_LOCAL_MACHINE\Software\Microsoft\Rpc\RpcProxy

Create a DWORD value with the name AllowAnonymous.

Right-click the AllowAnonymous DWORD value, and select Modify.

In the Value data field, enter 1.

Important:
On the RPC virtual directory security settings in Internet Information Services (IIS), under Authentication methods, verify that the check box next to Enable anonymous access is cleared.

Restart the World Wide Web Publishing Service (W3SVC) in the services snap-in to Microsoft Management Console (MMC).