plugin {
  quota_warning = storage=95%% quota-warning 95 %u 
  quota_warning2 = storage=80%% quota-warning 80 %u 
}
service quota-warning { 
  executable = script /usr/local/bin/quota-warning.sh 
  user = vmail   
  unix_listener quota-warning { 
    user = vmail 
  } 
}
plugin {
  quota = dict:User quota::proxy::quota
}