Install the python script mailcounter on monitored system under /usr/local/bin.
The script mailcounter requires some python modules. You can install these modules
on Debian box from the system repository using a command:
apt install python3-docopt python3-daemon python3-dateutil python3-systemd
You should try to run the script for a while in non-daemon mode (interrupt it by Ctrl-C):
mailcounter -D -v -v
Install the unit file mailcounter.service under /etc/systemd/system/ directory
of target monitored system and reload systemd
systemctl daemon-reload
Start the service mailcounter:
systemctl start mailcounter
The service should repeatedly write the status file:
# cat /run/mailcounter.txt
bounced 0
deferred 0
forwarded 0
greylisted 0
received 3
rejected 12
sent 3
spam 0
time_since 2023-11-23T17:52:19.654580+01:00
virus 0
Finally install an agent plugin on monitored host:
/usr/lib/check_mk_agent/plugins/mailperf
On your CheckMK monitoring system install the mkp package and reinventorize monitored system. Alternatively you can also set some levels for mail rates.
The mailcounter is inspired by the mailgraph utility and the pflogsum utility.
-- Václav Ovsík vaclav.ovsik@gmail.com Sun, 26 Nov 2023 22:10:25 +0100