# Postfix monitoring with Netdata Monitors MTA email queue statistics using [postqueue](http://www.postfix.org/postqueue.1.html) tool. The collector executes `postqueue -p` to get Postfix queue statistics. ## Requirements Postfix has internal access controls that limit activities on the mail queue. By default, all users are allowed to view the queue. If your system is configured with stricter access controls, you need to grant the `netdata` user access to view the mail queue. In order to do it, add `netdata` to `authorized_mailq_users` in the `/etc/postfix/main.cf` file. See the `authorized_mailq_users` setting in the [Postfix documentation](https://www.postfix.org/postconf.5.html) for more details. ## Charts It produces only two charts: 1. **Postfix Queue Emails** - emails 2. **Postfix Queue Emails Size** in KB - size ## Configuration Configuration is not needed.