I had to change out the LAN NIC on my Exch2K server, and in doing so, I had to give it a new IP address. I have all clients authenticating, and they are able to receive external e-mail, but no one can send. They get a message that a network error has occurred, restart and try again. Also, one system did send, but a return e-mail came saying that no transport provider was available for delivery. I can see them logged on in the mailbox store, and the SMTP Virtual server is set to the internalNIC address. Since this is SBS2000, I have even reinstalled O2K from the server on a client, which reconfigures the local client, but the same issue occurs.
Any ideas?
