The RPC Server is unavailable - Exchange System Manager Error

I have two exchange 2000 servers and one newly installed exchange 2003 server. I noticed that when i logon to Exchange server 2003 machine and open Exchange System Manager and expand Tools > Status i then usually get this error message "The RPC Server is unavailable, Facility: win32, ID no:800706ba" (I have attached is the screen shot of the error as well).

But strange thing is i don't get this all the time when i go to Tools > Status. And also i don't get this at all on Exchange 2000 servers. Please help me to rectify this what it caused?

My Exchange 2003 server is running on 2 node cluster.

Thanks
Exchange-System-Manager-Error.JPG
tech2010Asked:
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Veerappan SundaramConnect With a Mentor Senior Technical ConsultantCommented:
Yes, the steps and the process are same for both versions. There is no difference in storing Exchange the information in AD.
>>>>Veera.
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tech2010Author Commented:
any update?
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Veerappan SundaramSenior Technical ConsultantCommented:
Check "TCP/IP NetBIOS Helper" service is running.
Check all the servers are online and you are able to access the all the exchange servers from that problematic server.
>>>>Veera.
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tech2010Author Commented:
TCP/IP Helper service is running fine. However just to tell you one thing here that i have got few servers which used to be online in the past but has now been cut off from the network without properly uninstalling which leaves the server names still showing in the ESM but with the RED cross on it.

Could that be the reason why sometime it show the RPC error when i expand Tools > status container? If yes then why it does not gives this error when i nagivate the same on exchange 2000 servers?
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Veerappan SundaramSenior Technical ConsultantCommented:
Yes, thoes offline servers are the root cause of this error. To find out the exact reason, we need to use couple of tools like netmon, ExBPA etc.
The Q? is, those servers in offline were installed before Exchange 2000 or after this E2K server. The same Q? applies to E2K3 server also.
simply you want to clear off this error, use ADSIEDIT.msc to remove the entries of all the offline servers.
>>>>Veera.
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tech2010Author Commented:
Those servers were installed before Exchange 2003 but i am not sure if those were installed even before exchange 2000 or not. One of the exchange 2000 server we had installed for restore purpose and then never removed properly so thats why it is now showing offline in ESM.

Can you please guide me if there is any step by step procedure how to remove offline servers properly from Exchange environment as i do not want to mess with ADSIEDIT.msc as it is not safe? Thanks
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Veerappan SundaramSenior Technical ConsultantCommented:
You can get the proceedure from the below KB & article: http://support.microsoft.com/kb/260378            http://www.msexchange.org/tutorials/Remove-Exchange-server-entire-Exchange-organization.html
In your case, the servers are already removed and we need to remove only the entries from AD. ADSIEDIT is the best way. i have done it couple of times.YES, we have to be very careful while using ADSIEDIT.
>>>>Veera
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tech2010Author Commented:
OK agreed, can you then please tell me the steps to do in ADSIEDIT to remove entries of these offline servers.

And once we removed these entries then will those server be disappear from ESM?
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Veerappan SundaramSenior Technical ConsultantCommented:
It is there in link i posted earlier (msexchange.org)
http://www.msexchange.org/tutorials/Remove-Exchange-server-entire-Exchange-organization.html
Yes, it will go away from ESM.
>>>>Veera.
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tech2010Author Commented:
Hi Veera.

In msexchange.org article it explains about exchange 2003, but my offline servers which does not exist anymore on the network are exchange 2000. So should i still follow the same article?
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tech2010Author Commented:
ok let me try and i let you know
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