Kmail leaves sent messages in outbox folder

[Georgi Kourtev]

On сряда, 7 септември 2016 г. 8:08:10 EEST ianseeks wrote:
> On Wednesday, 7 September 2016 09:35:47 BST Georgi Kourtev wrote:
> > Hi all,
> > 
> > I have a terrible glitch in the system where kmail is leaving some of the
> > messages in the outbox folder instead of moving them to sent or other
> > folder I require.
> > 
> > Any ideas how to make it work as expected? Thanks,
> > gk
> 
> Can you post more information about your system, kmail, e.g. Version
> numbers, then someone might be able to help

Sorry, forgot to mention this:

Kubuntu 16.04
KDE Plasma version 5.6.5 
Qt version 5.5.1
Kontact version 5.1.3

The account is a POP3.
gk