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Description

My use case: I would like to set up apticron on my host to get notified about new package updates. My DMS container is up and running perfectly fine (+ SSL/SPF/DKIM/DMARC) with mail accounts set up. So, first I've set PERMIT_DOCKER=host and POSTFIX_INET_PROTOCOLS=ipv4.

After installing the package apticron-systemd (Debian 12) I've followed this guide: https://docker-mailserver.github.io/docker-mailserver/latest/examples/tutorials/basic-installation/#using-dms-as-a-local-mail-relay-for-containers

I've skipped some steps because everything else is set up already like SSL, SPF and so on.
Now I'm stuck at step 6 (with SPOOF_PROTECTION=1).

These steps will lead to:

[  ERROR  ]  '[email protected]' is already defined as an account`
[  ERROR  ]  Aborting

How do I have to configure DMS and probably mailx/exim4 (which is used by apticron) to send mails through DMS?
Found #1582 but still not sure how to configure DMS here. Do I still need PERMIT_DOCKER=host for that? Is there any way to NOT store a plaintext password in a config file?