Hello Hans-Georg,
thanks for the quick response. Indeed the missing upper case letters of the config-db was the problem in my setting.
It's strange but I had to name that database "KSpamCon.nsf" <- first letter also in upper case. I noticed that the template also had this spelling.
And you are right, bayesian filter will be the end-target, so I got to work on the kspam executable now ;-)
Viele GrĂ¼sse
Oliver