SSL Cert is still valid and in the correct name of web.
What I have also observed in the RPCDiag is after a while Directory connections are correctly connected using RPC over HTTPS but mail won't connect.
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RPC over HTTPS has stopped working
I am beginning to go out of my mind over this one. We have been running Exchange with an RPC over HTTPS scenario for over 2 years, and after patching the servers and firewall over the weekend, it has now stopped working and I have no idea why.
My deployment scenario is as follows:
I have a clustered Exchange Server 2003 configured as a backend RPC over HTTP server (call it mail). On the same network are 3 separate domain controllers, one of which is GC server (call it GC). In our firewall DMZ I have a server with IIS and Exchange Server 2003 configured as a Frontend RPC over HTTP server (call it web).
Now as I said the only thing that has changed was we patched everything up over the weekend to the latest MS patches. And the firewall which is a watchguard was upgraded graded to version 10 of the firmware.
So web is our RPC Proxy server. And I have checked all the settings on it the RPC virtual directory is correctly configured and when tested responds in the correct way (prompts for credentials 3 times and then reports 401.3 error on the ACL)
The firewall ports are still open correctly between the front end and back end server.
The only difference I can see in the clients is that when prompting for credentials it used to say please enter username and password for web, now it says please enter user name and password for mail.
Running an outlook.exe /rpcdiag on an external outlook client, shows the connection attempting to be made to mail via HTTPS then it drops without connecting. I do see Directory connection attempts to GC also, but these never seem to work either.
I really don't know what to do at this point because it seems everything I try doesn't change anything. I have even removed the RPC over HTTP proxy on web and redeployed to no avail.
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Answers
look at the following
http://www.petri.co.il/
I believe an RPCDump might have revealed my error, but how to fix? This is an rpcdump run against mail:
ProtSeq:ncacn_http
Endpoint:6002
NetOpt:
Annotation:MS Exchange Directory RFR Interface
IsListening:ACCESS_DENIED
StringBinding:ncacn_http:1
UUID:1544f5e0-613c-11d1-93
ComTimeOutValue:RPC_C_BIND
VersMajor 1 VersMinor 0
ProtSeq:ncacn_http
Endpoint:6002
NetOpt:
Annotation:MS Exchange System Attendant Cluster Interface
IsListening:ACCESS_DENIED
StringBinding:ncacn_http:1
UUID:f930c514-1215-11d3-99
ComTimeOutValue:RPC_C_BIND
VersMajor 1 VersMinor 0
ProtSeq:ncacn_http
Endpoint:6002
NetOpt:
Annotation:MS Exchange System Attendant Private Interface
IsListening:ACCESS_DENIED
StringBinding:ncacn_http:1
UUID:83d72bf0-0d89-11ce-b1
ComTimeOutValue:RPC_C_BIND
VersMajor 6 VersMinor 0
ProtSeq:ncacn_http
Endpoint:6002
NetOpt:
Annotation:MS Exchange System Attendant Public Interface
IsListening:ACCESS_DENIED
StringBinding:ncacn_http:1
UUID:469d6ec0-0d87-11ce-b1
ComTimeOutValue:RPC_C_BIND
VersMajor 16 VersMinor 1
ProtSeq:ncacn_http
Endpoint:6004
NetOpt:
Annotation:MS Exchange Directory NSPI Proxy
IsListening:ACCESS_DENIED
StringBinding:ncacn_http:1
UUID:f5cc5a18-4264-101a-8c
ComTimeOutValue:RPC_C_BIND
VersMajor 56 VersMinor 0
Also noticed that there is no entry for ncacn_http:6001 for the information store. This is on my backend Exchange box.
You might need to configure the registry for allowed ports
http://redmondmag.com/colu
Have you read this document?
http://technet.microsoft.c
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by: masa77Posted on 2008-04-22 at 02:34:40ID: 21409284
Is the SSL Certificate at the server side still valid?