Jak vyřešit zálohování emailových schránek v ISP Config

# Client maildomains ---------------------------------------------------------------------------
#
$SQLBIN -u$USER -p$PASS dbispconfig -e "SELECT domain AS MAILDOMAIN FROM mail_domain order by domain asc;" | grep [a-zA-Z0-9] | grep -v 'MAILDOMAIN' |
while read MAILDOMAIN
do
tar czvf $BPATH/maildomains/$DATUM'_mails__'$MAILDOMAIN'.tar.gz' /var/vmail/$MAILDOMAIN
done