On Mon, 25 Oct 2021 17:32:26 -0400 Karl Semich <0xloem@gmail.com> wrote:
yes. So you can try connecting. Since you're in the US you won't be discriminated based on country.
$ telnet stimson.state.gov 25 Trying 169.252.4.133... Connected to stimson.state.gov.
he he he
Escape character is '^]'. 554-stimson.state.gov 554 Your access to this mail system has been rejected due to the sending MTA's poor reputation. If you believe that this failure is in error, please contact the intended recipient via alternate means.
lovely, use 'alternate means'
Connection closed by foreign host.
Usually when a port isn't responding you'll get "timed out", "closed", "rejected" . port 79 times out for me.
telnet localhost 666 telnet: can't connect to remote host (127.0.0.1): Connection refused ok, so 'refused'.