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Wolfgang Hottgenroth
2026-01-15 13:41:12 +01:00
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@@ -15,6 +15,8 @@ Four environment variables are used to configure the container:
* `WHITELISTED_RECIPIENT`: Colon-separated list of whitelisted recipient domains, if empty no recipient restrictions will be applied
If `SMARTHOST` is not given, mail delivery will be done directly via MX lookup instead of using a smarthost.
## Deployment
Typically, don't expose the smtp port of this container to the default network of your Docker installation, otherwise it conflicts with a local MTA on the machine and it would be visible outside of the machine. Create a dedicated docker network, use that one as the default network for this container and connect other containers to that network. Afterwards, you can use the name of this container as smarthost address in the other containers.