Mail delivery logs

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1

As far as I understand, delivery logs can only be viewed using the internal utility:
/opt/kumomta/sbin/tailer --tail /var/log/kumomta

Could you please clarify if there is a built-in mechanism to forward these logs to Graylog (or another external logging system)?
Alternatively, is there any API available to access and view these logs directly, instead of relying only on the tailer tool?

3

Tailer is just for reading the logs in realtime. You can also use the standard zstd tool to decompress them and do what you want with them:

As for getting them to an external system, I’d suggest webhooks: