Configuring actions In $AFD_WORK_DIR/etc/action it is possible to define what AFD should do when for example some remote host is not reachable. If, for example the host dwd is not reached after 10 tries, AFD will try to execute the file $AFD_WORK_DIR/etc/action/target/error/dwd with the parameter 'start'. Once the host is reachable again it will again execute this script, only this time with the parameter 'stop'. One can configure similar actions for input directories of AFD as well. They are located in $AFD_WORK_DIR/etc/action/source/error.