[Users] Strange error when sending

Andrej Kacian andrej at kacian.sk
Thu Apr 6 14:19:12 CEST 2017

On Thu, 06 Apr 2017 11:49:45 +0000
Richard <lists-claws at listmail.innovate.net> wrote:

> ------------ Original Message ------------
> > Date: Thursday, April 06, 2017 09:54:39 +0000
> > From: Налимов Тимур Владимирович
> <nalimov at fintech.ru>
> >
> > Hello!
> > I ran into an incomprehensible mistake, made a bugreport
> > (http://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=
> > 3803), but I did not get any reaction. Perhaps, such a mistake
> > occurs at someone else. If you have met with a similar problem and
> > have been able to solve it - please write to me about this.
> > 
> > Thank you in advance!
> > 
> > Timur
> > 
> > 
> I'm going to guess that the server you are connecting to doesn't
> intend to support unencrypted sessions, but isn't configured
> correctly so doesn't reject them outright. E.g., it appears to let
> you send your credentials unencrypted, but then doesn't start up the
> data connection. In short, rather than properly turning off IMAP/143
> and forcing people to IMAPS/993, they left 143 open in the worst way
> possible (accepting unencrypted credentials). 
> If CM is configured to save the draft to the server and the server
> isn't configured properly (so CM can't make a successful connection),
> there isn't a lot that CM can do. So, this looks like a server, not
> CM, issue/error. [and perhaps a service provider to move away from.]
> The solution would seem to be to configure your CM instance to use
> IMAPS/993, as you indicate that that works.

No, there really is a bug in Claws Mail. I was able to reproduce it,
and will be trying to fix it. Unfortunately, it looks like a result of a
memory corruption somewhere else in the code - and this kind of bugs is
hard to track down.


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