Addendum, in case anybody wonders, port 465 is not blocked either: ─demian@anonymous ~ ╰─$ telnet mail.riseup.net 465 Trying 198.252.153.227... Connected to mail.riseup.net. Escape character is '^]'.
Hopefully anyone will be able to offer any form of advice what to look for ... D ★ On 16/05/11 10:27 p.m. Demian Smith wrote ★ > Hi List, > > I hope I did read the documentation sufficiently and have come to the > right place with this request - if not, please don't hesitate telling me > off. Unfortunately, forums.debian.net seems dead for 2 years, otherwise > I would have posted there. > > Since a couple of days I cannot send email with one of my smtps > (mail.riseup.net) and have additional problems with other smtps. For the > other smtps I can send messages, unless I attach any file to the mail. > The main issue is the smtp of riseup failing completely with the message: > "Sending of the message failed. > The message could not be sent using Outgoing server (SMTP) > mail.riseup.net for an unknown reason. Please verify that your Outgoing > server (SMTP) settings are correct and try again." > > I have confirmed with riseup that smtp is up and running and have, in > fact, added the same account with the same details in a different OS > where I don't see problems sending mails. > > I have tested both ssl/tls and STARTTLS on all port (25, 465 and 578), > all without any success. I suspected a DNS error first, but verified > that my DNS resolves ok for the host, so I am now expecting that maybe > some update did mess something on my system, but am not able to > determine which update / which setting. > > The last upgrades I did were as follows: https://paste.debian.net/683466 > > I did try a reinstall of icedove to no avail and also confirmed the same > issue with kmail on the same system. > > I am running Debian 8.4: > > $ lsb_release -da > LSB Version: > core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch:core-4.1-amd64:core-4.1-noarch:security-4.0-amd64:security-4.0-noarch:security-4.1-amd64:security-4.1-noarch > Distributor ID: Debian > Description: Debian GNU/Linux 8.4 (jessie) > Release: 8.4 > Codename: jessie > > $ konsole --version > KDE is KDE Development Platform: 4.14.2 > > My main mail client is icedove: > $ icedove --version > Icedove 38.7.0 > > but I tested the settings as well in KMail 4.14.1 > > > And I have www.deb-multimedia.org enabled in /etc/apt/sources.list.d/ > > > So, as you can see from my stumbling in the dark, I am totally lost for > this one and any help or pointers would be appreciated, before I go and > nuke the system for a reinstall... > > Thanks in advance, > Demian > >