[Users] Strange error when sending

[Richard]

------------ 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.