On 6/16/2015 10:44 AM, Steve Matzura wrote: > The next phase of my testing procedure involves the simple act of > delivering mail to my test box. When I send a message to either a > valid or relayed user at my remote machine's address, it never gets > there. I know this virtually for sure because I'm tailing > /var/log/maillog and nothing new has been added for the past hour. I'm > thinking eventually my ISP will send the message back to me as > undeliverable, and in that bounced message there may be some > information about why it was undeliverable, but maybe someone has a > thought as to why I'm not even seeing anything attempt to connect?
No attempt to deliver almost always means either: - a DNS problem; the sender can't find the destination, or finds the "wrong" destination. - a connectivity problem; the sender can't connect to the destination. Possibly a firewall not open.