Missing metrics

[dc-mailchannels]

I've installed this across a number of machines and consistently found a number of metrics aren't being returned including smtp_messages_processed_total.

[fiirhok]

I'm seeing the same thing, is there anything I can check?

[yvoictra]

Same here...

[fiirhok]

It turns out the issue was only with the version packaged for Ubuntu (prometheus-postfix-exporter:0.3.0-1). When we built from source, we got all of the expected metrics.

[joelsdc]

Something similar happened to us, we ended up building from master (it has some nice fixes compared to the latest release). (We also updated Postfix, but that isn't relevant here)

Now most if not all the metrics are populated correctly.

[dswarbrick]

It turns out the issue was only with the version packaged for Ubuntu (prometheus-postfix-exporter:0.3.0-1). When we built from source, we got all of the expected metrics.

This is likely due to the broken systemd-journal support in postfix_exporter, which is the default method of reading the Postfix log in the Debian / Ubuntu package of prometheus-postfix-exporter. See #55.

If you reconfigure your packaged exporter to read from /var/log/mail.log instead, I expect it will work for you.