There is a Exchange 2000 on site 1 in Holland that has been working for about a year. It recieves email for about 7 domains. In the SMTP delivery advanced it has a smart host entry which is an ISA 2000 server. On ISA it secures OWA and runs the SMTP queues as well each domain is listed in there. The domians have a smart host entry back to the exchange 2000 server.
I have a exchange 2003 server which receives for another domain name (the MX points to me) and works fine. In the same organisation and routing group.
The problem I have is that some of the people (mailboxes) on my server have alias (smtp) for some of the domain names on the other server. They are not getting mail or having it delivered 30 after it is sent.
It would seem that due to the smart host entry Exchange has lost the ability to look at the recipient policy which has all domains in and make the necesaary routing decsions. The senders are not getting a ndr so in effect I have been loosing interna, and external mail for the last week.
Any help to resolve this would be appreciated.