Thanks for your reply. As it turned out, it didn't work because I didn't have vmailbox, vuid and vgid specified. Mostly because this is my workstation with just one user. Adding those fixed it. Which won't be a problem, because our mailservers have to have those files in any way.
BitDefender is a antivirus package. They have versions for postfix, qmail, sendmail, samba and a "console" version. Using it is unfortunately not my decision - spamassassin catches most of the viral mails in any case. Thanks Hans -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]