I'm building SBS 2008 for a customer and I try to configure the Exchange server to send and receive emails.
I did configure the send connector, receive connector, accepted domains and everything else the same way I allways did for all the other servers.
The only diference is that the server is on my lab connect it to a router that has a diferent IP adress that what the MX record for their domain is set to now.
When I send email they get stack in the que and I get the following message when I run the mailflow analyzer.
Remote Delivery que is in Retry
The 'Remote delivery' queue (SERVER\10) on server SERVER is in retry status. Number of message(s) in the queue: 1. Last error information: 451 4.4.0 Primary target IP address responded with: "421 4.2.1 Unable to connect." Attempted failover to alternate host, but that did not succeed. Either there are no alternate hosts, or delivery failed to all alternate hosts.