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postfix_exporter's Issues

Nice metrics for postfix_exporter

Hello @sergeymakinen

So far, I'm running two different postfix exporters, of which only yours seems to be maintained.
In order to diagnose postfix, I'd love to see the following metrics added to your postfix exporter:

  • postfix queue average mail age
  • number of enqueued messages

I'd like to have some more values, but I get alot of NaN values, so I guess I need to open another issue first before asking you things that the exporter already does perhaps.

PS: I updated your grafana dashboard to use vectors, and added some metrics. I'll post them if needed.

2.0.0-beta0 produces lots of errors when dovecot is used

Hello Sergey,

I'm currently testing your 2.0.0-beta0 release on one of my servers.
The server has dovecot writing to /var/log/mail.log which produces alot of "non postfix" error lines in your exporter.

ts=2023-12-26T10:24:32.242Z caller=main.go:39 level=info msg="Starting postfix_exporter" version="(version=2.0.0-beta.0, branch=HEAD, revision=91d1f51e7e5bd424c0190f4bd6ff5d004bd758d0)"
ts=2023-12-26T10:24:32.242Z caller=main.go:40 level=info msg="Build context" context="(go=go1.21.4, platform=linux/amd64, user=root@ee34a7c5589c, date=20231203-21:15:58, tags=netgo)"
ts=2023-12-26T10:24:32.242Z caller=tls_config.go:274 level=info msg="Listening on" address=[::]:9907
ts=2023-12-26T10:24:32.242Z caller=tls_config.go:277 level=info msg="TLS is disabled." http2=false address=[::]:9907
ts=2023-12-26T10:24:40.660Z caller=exporter.go:156 level=warn msg="Error parsing log record" err="missing \"[\" in \"Dec 26 11:24:40 mail dovecot: pop3-login: Login: user=<[email protected]>, method=PLAIN, rip=123.123.123.256, lip=231.231.231.256, mpid=25823, TLS, session=<hPwZF2cNLtzB/T5C>\"" record=
ts=2023-12-26T10:24:40.746Z caller=exporter.go:156 level=warn msg="Error parsing log record" err="missing \"[\" in \"Dec 26 11:24:40 mail dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=123.123.123.256, lip=231.231.231.256, mpid=25824, TLS, session=<N0kbF2cNLdzB/T5C>\"" record=
ts=2023-12-26T10:24:40.854Z caller=exporter.go:156 level=warn msg="Error parsing log record" err="missing \"[\" in \"Dec 26 11:24:40 mail dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=123.123.123.256, lip=231.231.231.256, mpid=25825, TLS, session=<ZeocF2cNL9zB/T5C>\"" record=
ts=2023-12-26T10:24:42.620Z caller=exporter.go:156 level=warn msg="Error parsing log record" err="missing \"[\" in \"Dec 26 11:24:42 mail dovecot: pop3([email protected])<25823><hPwZF2cNLtzB/T5C>: Disconnected: Logged out top=0/0, retr=10/430675, del=13/319, size=69523868\"" record=
ts=2023-12-26T10:24:43.560Z caller=exporter.go:156 level=warn msg="Error parsing log record" err="missing \"[\" in \"Dec 26 11:24:43 mail dovecot: lmtp(25736): Connect from local\"" record=
ts=2023-12-26T10:24:43.749Z caller=exporter.go:156 level=warn msg="Error parsing log record" err="missing \"[\" in \"Dec 26 11:24:43 mail dovecot: lmtp([email protected])<25736><kK/+IOupimWIZAAAYRFFHw>: sieve: msgid=<JIRA.14713.1701100651000.88bd67ae-9e6a-405b-95ee-0d9ee9a81f10.1703586255696@Atlassian.JIRA>: stored mail into mailbox 'INBOX'\"" record=
ts=2023-12-26T10:24:43.751Z caller=exporter.go:156 level=warn msg="Error parsing log record" err="missing \"[\" in \"Dec 26 11:24:43 mail dovecot: lmtp(25736): Disconnect from local: Client has quit the connection (state=READY)\"" record=
ts=2023-12-26T10:24:44.777Z caller=exporter.go:156 level=warn msg="Error parsing log record" err="missing \"[\" in \"Dec 26 11:24:44 mail dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=123.123.123.256, lip=231.231.231.256, mpid=25827, TLS, session=<dhdZF2cNMtzB/T5C>\"" record=

Perhaps you could filter out non postfix logs from the exporter to lighten it's output ?
AFAIK, all postfix logs begin with the timestamp and the word "postfix", eg:

Dec 26 11:03:06 mail postfix/lmtp[20812] ...
Dec 26 11:31:20 mail postfix/cleanup ...
Dec 26 11:32:02 mail postfix/smtps/smtpd[25531] ...
Dec 26 11:32:37 mail postfix/submission/smtpd ...

Error parsing log record

Hey,

We are trying to you use this exporter on RHEL 8.7 with postfix version 3.5.8. Our log lines look like this:

2023-11-30T22:09:43.255136+00:00 HOSTNAME IP_ADDRESS/smtpd[273137]: disconnect from abc.xyz.com[xxx.xxx.xxx.xxx] ehlo=1 mail=12 rcpt=12 data=12 rset=11 commands=48 2023-11-30T22:09:43.256146+00:00 HOSTNAME IP_ADDRESS/smtpd[275221]: disconnect from abc.xyz.com[xxx.xxx.xxx.xxx] ehlo=1 mail=20 rcpt=20 data=20 rset=19 commands=80 2023-11-30T22:09:43.268411+00:00 HOSTNAME IP_ADDRESS/smtpd[274085]: disconnect from abc.xyz.com[xxx.xxx.xxx.xxx] ehlo=1 mail=19 rcpt=19 data=19 rset=18 commands=76

We are getting the following error when running the exporter:

ts=2023-11-30T21:27:08.821Z caller=exporter.go:145 level=debug msg="Error parsing log record" err="parsing time \"2023-11-30T21:27:08.657173+00:00 HOSTNAME IP_ADDRESS/smtpd[262090]:\" as \"Jan 2 15:04:05\": cannot parse \"2023-11-30T21:27:08.657173+00:00 HOSTNAME IP_ADDRESS/smtpd[262090]:\" as \"Jan\"" ts=2023-11-30T21:27:08.821Z caller=exporter.go:145 level=debug msg="Error parsing log record" err="parsing time \"2023-11-30T21:27:08.662588+00:00 HOSTNAME postfix/cleanup[265195]:\" as \"Jan 2 15:04:05\": cannot parse \"2023-11-30T21:27:08.662588+00:00 HOSTNAME postfix/cleanup[265195]:\" as \"Jan\"" ts=2023-11-30T21:27:08.821Z caller=exporter.go:145 level=debug msg="Error parsing log record" err="parsing time \"2023-11-30T21:27:08.667535+00:00 HOSTNAME IP_ADDRESS/smtpd[262090]:\" as \"Jan 2 15:04:05\": cannot parse \"2023-11-30T21:27:08.667535+00:00 HOSTNAME IP_ADDRESS/smtpd[262090]:\" as \"Jan\""

It seems the exporter is not able to parse the timestamps correctly. We have tried this with both file collector and journald options. Any suggestions how to fix this?

Thanks in advance!

metrics not consistent

Using postfix_exporter, there are lot of missing values, which show NaN

postfix_smtp_delay_seconds{status="bounced",quantile="0.5"} NaN
postfix_smtp_delay_seconds{status="bounced",quantile="0.9"} NaN
postfix_smtp_delay_seconds{status="bounced",quantile="0.99"} NaN
postfix_smtp_delay_seconds{status="deferred",quantile="0.5"} NaN
postfix_smtp_delay_seconds{status="deferred",quantile="0.9"} NaN
postfix_smtp_delay_seconds{status="deferred",quantile="0.99"} NaN
postfix_smtp_delay_seconds{status="deliverable",quantile="0.5"} NaN
postfix_smtp_delay_seconds{status="deliverable",quantile="0.9"} NaN
postfix_smtp_delay_seconds{status="deliverable",quantile="0.99"} NaN
postfix_smtp_delay_seconds{status="undeliverable",quantile="0.5"} NaN
postfix_smtp_delay_seconds{status="undeliverable",quantile="0.9"} NaN
postfix_smtp_delay_seconds{status="undeliverable",quantile="0.99"} NaN

Also, I do not have at all any postfix_lmtp* metrics.

Env:

postfix_exporter, version 1.2.3 (branch: HEAD, revision: 1a165a25141dd26027a1a3fec8980541b6f8b962)
  build user:       root@c115ac5c6c2d
  build date:       20230831-21:59:00
  go version:       go1.20.7
  platform:         linux/amd64
  tags:             netgo

OS:

CentOS 7
postconf mail_version
mail_version = 3.5.9

I can provide anonymized mail logs if needed.

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