Re: Can't send e-mail via `smtpmail'

[Yuri Khan]

On Wed, Jul 15, 2015 at 2:40 AM, Alexander Shukaev <haroogan@gmail.com> wrote:

>>> > $ gnutls-cli --verbose --starttls --tofu -p 587 mail.gandi.net
>>> > Processed 161 CA certificate(s).
>>> > Resolving 'mail.gandi.net'...
>>> > Connecting to '217.70.184.11:587'...
>>> > Connecting to '2001:4b98:c:521::11:587'...
>>> > Could not connect to 2001:4b98:c:521::11:587: Connection refused

> $ gnutls-cli --verbose --starttls --tofu -p 587 mail.gandi.net
> Processed 161 CA certificate(s).
> Resolving 'mail.gandi.net'...
> Connecting to '217.70.184.11:587'...

[…]

> Similarly, sending with `smtpmail' works as well.  Kek, how come?
> Something wrong with DNS at the previous place?

As seen in the quotes above, the IP address is identical, so DNS is
OK. But, in similar cases where you cannot connect, you might want to
run a traceroute to the target IP and note where the latter stops.
Might be your provider not liking the server, or a temporary glitch
along the way.