16 Jun
2015
16 Jun
'15
8:13 p.m.
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.