Mail not routing to users on one 6.5.4 Domino server

Hi

I hope someone can assist with this - I set up 6.5.4 server on Win 2000 - the problem I am having is that mail within Notes users is not reaching and either disappears or gets stuck in Mail.Box.

The server console shows router messages like:

Message 007D72CB forwarded to xyz/Domain@Domain

No server entry in Domino Directory for local server.

I can send mail out via SMTP to others, but not from a Notes user to another on this server - there’s only one Domino server.

Can someone please suggest what to do - I tried various settings and creating config/location documents to no avail.

Thanks