We have SBS 2000. Exchange is currently set to forward all outgoing email via a smart host which is a linux mail server.
The local domain is domain.local (I have used the word domain for info only). In exchange, the default policy has the following email addresses. smtp @domain.co.uk and @domain.local and an X400 address. The @domain.local is set as the primary. On the policy, @domain.co.uk has the "This exchange Organisation is responsible for all mail delivered to this address" ticked. Unticking this option does not seem to make any difference.
Email appears to be stuck in the system. I have been monitoring the queues and most end up in the messages with an unreachable destination queue awaiting a retry.
I want all email to be sent via the smart host (Linux server).