Hi, though set in conf.php $conf['rules']['userheader'] = true; I don't see an option for a user defined header in the dropdown list. Opening a rule with such a user defined (X-Been-There) header, it is set to "An:" (in german) in the Interface). Backend is Sieve with the timsieved Driver. Everything else in ingo is working fine. Any help/ideas appreciated. Hanns