diff --git a/vmbackup.sh b/vmbackup.sh
index 3a7a30d..754694a 100755
--- a/vmbackup.sh
+++ b/vmbackup.sh
@@ -3,8 +3,10 @@
 set -e
 set -u
 
-statusfile=/home/cig/vmbackup.status
+statusfile=/var/run/zabbix/vmbackup.status
 basedir=/mnt/backups/vms
+vbm="echo sudo -u cig vboxmanage"
+rsync="echo rsync"
 
 _exit () {
 	echo $1 > $statusfile
@@ -15,7 +17,7 @@ _mail () {
 	echo "$@" | mail -s "$(hostname -f) : vm backup error" root
 }
 
-mount /mnt/backups &> /dev/null
+mount /mnt/backups &> /dev/null || _exit "mount failed"
 
 if [ ! -d $basedir ] ; then
 	_mail Dir $basedir not mounted
@@ -32,7 +34,7 @@ fi
 
 function checkRunning {
 	local machine=$1
-	vboxmanage list runningvms | grep -q $machine
+	sudo -u cig vboxmanage list runningvms | grep -q $machine
 	return $?
 }
 
@@ -43,15 +45,16 @@ if ( checkRunning $machine ) ; then
 	mv ${basedir}/current ${basedir}/old
 	ln -s ${outputdir} ${basedir}/current
 	test $? -eq 0 || { _mail "erreur de copie" ; _exit 44 ; }
-	vboxmanage controlvm $machine acpipowerbutton shutdown
+	$vbm controlvm $machine acpipowerbutton shutdown
 	sleep 60
-	rsync --inplace -a /srv/VM/Win/roofline ${outputdir}/
+	$rsync --inplace -a /srv/VM/Win/roofline ${outputdir}/
 	ret=$?
 	test $ret -eq 0 || _mail "rsync error $ret"
-	vboxmanage startvm $machine
+	$vbm startvm $machine
 	ln -s ${outputdir} ${basedir}/current
 	test $ret -eq 0 && find ${basedir} -maxdepth 1 -type d -mtime +7 -exec echo rm -fr {} \;
-	umount /mnt/backups &> /dev/null
+	umount /mnt/backups &> /dev/null || _mail "umount failed"
+   _mail "backup done with status $ret"
 	_exit $ret
 fi
 _mail "vm $machine not running"