Daniel Vogel wrote:
Your mail server cannot connect to the SMTP server at
another.external.machine.
See if you can do it manually:
$ telnet another.external.machine smtp
well, as i blocked telnet port on the other machine
This is connecting to the smtp port, not the telnet port.
i connect by ssh,
then on the same machine i telnet localhost smtp and it works (just to
be sure because i set up that machine), so the machine does have smtp
working.
Doesn't mean it's listening on any address other than localhost though.
Please try:
$ telnet another.external.machine smtp
from the machine that has the mail stuck in the queue.
Paul.
