Hello everybody, I solved the problem with the Messages that seemed to be old, although i never had a look at them. I just made a procmail recipe which filters the Status: and X-Status: headers. Here it is, just in case somebody might need ist someday:
:0 fhw |formail -I "Status" -I "X-Status" This doesn't solve the Problem, but since i couldn't firgure out which program put the headers into my mails, this snippet at least works. Greetings Christoph