Hi!
I've added an Exchange 2013 server to our Exchange 2010 environment, and it does not seem to be able to send or receive mail. It can definitely communicate with the Exchange 2010 server- I've successfully migrated mailboxes from the 2010 server to 2013- I just can't send any mail there. I've set up the Send and Receive Connectors on the 2013 server, and they're configured pretty much identically to the connectors on our 2010 box.
Messages sent from an account on the 2013 server simply sit in the drafts folder. Looking at the logs on that server, I don't see anything happening at all. For example, the logs at ~\Exchange Server\V15\TransportRoles\Logs\FrontEnd\ProtocolLog\SmtpSend and SmtpReceive haven't been updated since the initial install of Exchange. No logs have yet been created under ~\Exchange Server\V15\TransportRoles\Logs\Hub\ProtocolLog\SmtpSend and SmtpReceive.
On our 2010 server, messages I try to send to a mailbox on the 2013 server get stuck in the queue with the error presented being451 4.4.0 Primary target IP address responded with:
"421 4.4.2 Connection dropped due to SocketError." There shouldn't be anything preventing communication on the 2013 server- no antivirus running, and I've got the firewall disabled while I troubleshoot this issue.
Additionally, DNS seems to be working fine on both machines. Both can resolve the other's name, and addresses on the internet.
Just for background, our environment consists of a single Exchange 2010 server at version 14.3 (Build 123.4) and a single Exchange 2013 server at Version 15.0 (Build 847,32).
Any help would be much appreciated. Thanks!