Problem solved. I hate it when things are sooo easy once you have figured it out.
Just to save a few hours for someone else: Use fetchmail. There seem to be some issues about multidrop stuff, read the man page. using fetchmail, your fetchmailrc looks like this: set postmaster "dirk" poll pop.xs4all.nl aka xs4all.nl with proto POP3 user "dirk" there with password "very-secret" to dirk to adb=anna limit 100000 warnings 3600 this "to adb=anna" delivers [EMAIL PROTECTED] to [EMAIL PROTECTED] This configuration wasn't hard to find, but, it didn't work without the "aka xs4all.nl" So I spent hours looking for what was wrong and just overlooked this simple aka. I am curious why it is important. If someone could explain? Dirk