Monitoring Postfix

This article will help you get the Postfix plugin for sd-agent configured and returning metrics

Installing the postfix plugin package

Install the postfix plugin on Debian/Ubuntu:

sudo apt-get install sd-agent-postfix

Install the postfix plugin on RHEL/CentOS:

sudo yum install sd-agent-postfix

Read more about agent plugins.

Configuring the agent to monitor Postfix

1. Configure /etc/sd-agent/conf.d/postfix.yaml


- directory: /var/spool/postfix
- incoming
- active
- deferred
  • Important: the sd-agent user must have sudo access to run this plugin. See sudo access for more info

2. Restart the agent

sudo /etc/init.d/sd-agent restart


sudo systemctl restart sd-agent

Verifying the configuration
Execute info to verify the configuration with the following:

sudo /etc/init.d/sd-agent info 


/usr/share/python/sd-agent/ info

If the agent has been configured correctly you'll see an output such as:

  - instance #0 [OK]
  - Collected * metrics

You can also view the metrics returned with the following command:

sudo -u sd-agent /usr/share/python/sd-agent/ check postfix

Configuring graphs

Click the name of your server from the Devices list in your Server Density account then go to the Metrics tab. Click the + Graph button on the right then choose the postfix metrics to display the graphs. The metrics will also be available to select when building dashboard graphs.


Monitored metrics


Type: float

Metrics Conversion

Please refer to the metrics conversion document to map old metrics names to the new metric names.

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