klauncher said: Unknown protocol 'smtps'

["René J.V. Bertin"]

It's all in the title. Trying to send email with KMail. I get the following error in the system.log, and the message remains put in my outbox:

klauncher said: Unknown protocol 'smtps'

have I missed something installing kdepim4? I found only 1 or 2 messages on kde.org, from an older KDE version, suggesting that this is nothing new ...

R.