plugin {
  quota_warning = storage=100%% quota-warning 100 %u %d
  quota_warning2 = storage=95%% quota-warning 95 %u %d
  quota_warning3 = storage=80%% quota-warning 80 %u %d
}
service quota-warning {
  executable = script /usr/local/bin/quota-warning.sh
  user = root
  unix_listener quota-warning {
    user = mail
    mode=0666
  }
}