Re: MTA RPC EVent ID 9318 Comms Error 9297

From: trmbr (trmbr50_at_hotmail.com)
Date: 08/20/04 

Date: Fri, 20 Aug 2004 12:18:41 +1000

Neal
Dont give up mate...I came across this web site which has solved my problem,
which is security related based on the ANONYMOUS account requiring
permissions set as per the following instructions.

See if they apply in your situation - mine was resolved

Regads
trmbr
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http://www.larkware.com/Articles/TheDailyGrind125.html

Search for "9297" which resulted in:

So, about those Exchange servers. Two servers, both Exchange 2003 running on
Windows Server 2003 in native Win2K3 AD mode. Every ten minutes server #1
drops a message in its event log:

MSExchangeMTA event ID 9297:
An RPC communications error occurred. Unable to bind over RPC. Locality
Table (LTAB) index: 8, Windows 2000/MTA error code: 9297. Comms error 9297,
Bind error 9297, Remote Server Name PINETREE [MAIN BASE 1 500 %10] (14)

And at the same time server #2 complains:

MSExchangeMTA event ID 9297:
Calling client thread does not have permission to use MTA RPCs. Windows 2000
error code: 0X80070005. Client user account: NT AUTHORITY\ANONYMOUS LOGON.
[BASE IL INCOMING RPC 25 237] (14)

And sure enough, machine #1 does have a batch of stuff piled up in Exchange
MTA queues destined for PINETREE, if it could ever it through. Any ideas
cheerfully accepted.

Update 12/22/03

Well, I finally have a fix for those event log messages. I'm posting this
update because I get e-mail from 2 or 3 users every month with this exact
problem. But let me be quite clear: I don't understand why this worked, and
I don't understand the security implications. If you can enlighten us all,
please leave a comment. Anyhow, based on a newsgroup posting, here's my
ad-hoc fix:

1. Run regedit on the computer where you run Exchange System Manager. Locate
the key HKCU\Software\Microsoft\Exchange\ExAdmin. Add a new DWORD value
named ShowSecurityPage and set its value to 1.
2. Run Exchange System Manager and then expand the appropriate
administrative group, then the server that's posting the 9297 errors, then
protocols. Right-click the X.400 protocol and select Properties.
3. Select the Security tab. Locate the account that's listed in the 9297
message. Grant this account "Send As" and "Receive As" permission. Click OK.
4. Restart the Exchange MTA service.

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