I think is a bug, I correct lib/Script/Maildrop/Recipe.php $this->_action[] = ' flock "vacationprocess.lock" {'; to $this->_action[] = ' flock "$HOME/vacationprocess.lock" {'; and now work perfectly -- Responsabile EDP Massimo Balestrieri Tel. +39 0521 525311 Fax +39 0521 525369 E-Mail: massimo.balestrieri at mag-data.com Web: www.mag-data.com