KMail is irretrievably broken

[Peter Humphrey]

On Thursday, 14 September 2017 22:09:06 BST Ingo Klöcker wrote:
> On Thursday 14 September 2017 15:07:18 Peter Humphrey wrote:
> > Today, for example, I've had two mailing-list replies also CC'd to me.
> > In both cases the CC appeared in my inbox, as it should, but the list
> > reply didn't appear anywhere. Your message was one of those; I had to
> > move the CC into the list folder myself.
> 
> I don't believe that KMail is to blame for this.
> 
> Please check the "Avoid duplicate copies of messages?" setting of those
> mailing lists. This setting defaults to Yes for some (if not all) KDE
> mailing lists and would explain why you've received only one copy. GMail
> and some Exchange servers also try to be helpful and silently drop
> duplicates.

Not so. This behaviour has only begun today. I've been receiving e-mails 
properly for years until now, and I certainly haven't changed anything on 
the list hosts. I will check though.

-- 
Regards,
Peter.