We native Exch2003 environment, three sites, one server per site.
Site-A is bridgehead to internet.
Mail delivery is fine when sent from:
- A to B
- A to C and C to A
- B to C and C to B
- from the internet to A,B,C and from A,B,C to the internet
However not from B to A!! The mail is bounced and ends up with NDR.
Is internal mail possible with any connectors, so based on X.400? If so, above mentioned communication is only possible with routing connectors between the sites and a SMTP connector to the internet.
A message track show transport using SMTPT most of the time. Sometimes is X.400 used. A failing message is ccording to the log deliverd at the apprpriat mailbox however it starts its way over again with 'store driver submitted to MTA'.
I have to mention that server A is a DC and had a crash last weekend. The system has been rebuild after cleaning AD.
DCDIAG and NETDIAG show no problems.
Spent many days in resolving the problem but unfortunatly without succes