Two Exchange 2000 servers located in the same administrative group or routing group cannot send mail to each other. Mail refuses to go through SMTP, and eventually sits in the message transfer agent (MTA) queues to the other server.
This can also appear in an Exchange 2000, Exchange 5.5 mixed mode environment. All Exchange 2000 servers can send mail to each other, but all mail to an Exchange 5.5 server will not deliver and will return the Events and NDRs included in this article.
You also see the following event ID in the program event log:
Source: MSExchangeMTA
Category: Security
Event ID: 9297
Description:
The user /o=Microsoft/ou=First Administrative Group/cn=Configuration/cn=Servers/cn="server_name" has caused a security violation. Locality table (LTAB) index: 4. Windows 2000 error code: 0X80070005. [BASE IL MAIN BASE 1 237] (14)
After applying Service Pack 1 for Exchange 2000, you will instead get this error:
Event Type: Warning
Event Source: MSExchangeTransport
Event Category: Categorizer
Event ID: 9006
User: N/A
Computer: EXCHANGE
Description: The FQDN of a remote server is also configured as a local domain on this SMTP virtual server. This is causing 5.4.8 NDRs. Please remove 'unik.dk' from your recipient policies.
Data: 0000: c0040242
Users will also receive the following NDR:
Your message did not reach some or all of the intended recipients.
Subject: Test Message
Sent: 7/12/2002 5:27 PM
The following recipient(s) could not be reached: Richard Bready on 7/12/2002 5:27 PM. A configuration error in the e-mail system caused the message to bounce between two servers or to be forwarded between two recipients. Contact your administrator. <server1.contoso.com #5.4.8>