On Tue, 16 Jun 2015 11:27:58 -0500, you wrote: >No attempt to deliver almost always means either: >- a DNS problem; the sender can't find the destination, or finds the >"wrong" destination.
That would be interesting, since I tried both the actual IP address and the DNS name for the test node. Neither message got through. >- a connectivity problem; the sender can't connect to the >destination. Possibly a firewall not open. Now there's a possibility, but I am not aware of running any firewall on the remote machine.
