On Mon, Aug 28, 2017 at 08:06:39AM -0500, Tom Browder wrote:
> There was a temporary problem delivering your message to
> tbro...@novco1968tbs.com. Gmail will retry for 46 more hours. You'll be
> notified if the delivery fails permanently.
>
> Learn more here: https://support.google.com/mail/answer/7720
>
> The response was:
>
> The recipient server did not accept our requests to connect. Learn more at
> https://support.google.com/mail/answer/7720
> [mail.novco1968tbs.com. 142.54.186.6: generic::failed_precondition: connect
> error (0): error]
This is a much too long-winded description of the same symptoms you'd
see with "posttls-finger" or "swaks".
$ posttls-finger novco1968tbs.com
posttls-finger: Failed to establish session to novco1968tbs.com via
mail.novco1968tbs.com: connect to mail.novco1968tbs.com[142.54.186.6]:25:
Connection refused
[ Google really should do a better job of reporting SMTP delivery
in a form that won't scare naive users, but still retains sufficient
technical detail for experts. I don't think that
generic::failed_precondition: connect error (0): error
meets that requirement. ]
You have nothing listening on port 25 on your public IP address.
Perhaps you have the "inet_interfaces = loopback-only" safety net
still enabled.
For further help, follow up with configuration details as requested by others.
--
Viktor.
