Mail related environment variables documentation

I am using Graylog4 in a docker container via docker compose

I tried testing an email alert and received the error.

The Graylog server encountered an error while trying to send an email. This is the detailed error message: java.lang.NullPointerException

The docker compose Example 2 at Docker makes reference to.


This should be:


Thanks for reporting this! I’ve opened a request for our docs team to correct this.

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