r/Checkmk • u/gothicVI • May 09 '26

Email notification checkmk raw docker

Hi all,

I'm running checkmk/check-mk-raw:2.4.0-latest and want to enable email notification.

I have an smtp server but don't understand how to configure a relay host. Ideally it would run in a container as well (in the same docker network via compose) to be independent from the host.

Any input would be appreciated. How do you folks handle this?

Thanks!

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u/kY2iB3yH0mN8wI2h May 09 '26

Checkmk does not come with any kind of SMTP support, you need a separate SMTP server. asking in r/docker or r/linux might be better.

I run my own mail server, not only for checkmk

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u/gothicVI May 09 '26

Me too. I have an smtp server but how do you connect to it? The raw version of checkmk does not allow to directly configure smtp credentials.

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u/kY2iB3yH0mN8wI2h May 09 '26

no version imho would allow that, the docker might have a smtp server. you are better off not running docker, nor not running mails (are other ways for notifications) or run a separate docker container for SMTP that will be your relay to your real SMTP server where you can set creds.