docker-iot-dashboard
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mcci-catena
Use namshi/smtp as SMTP container
Replace Postfix Dockerfile with namshi/smtp. This image is simpler to use and configure ("less code, less bugs" :) ). Warning: it's a backport from one of my other projects, so had no time to thoroughly test it here, but it should be pretty straight-forward.
I'm a little nervous about exim as the base, as I've never used it; but I guess there's a first time for everything. However, looks like you've removed the ability to relay mail, which I use. And I can't tell if any of the modern mail anti-spam features are used (names escape me, but there's a DNS-based thing, and a signing thing that's more advanced). That's why I use a relay, the relay server takes care of all that so I don't have to duplicate.
Ok, didn't know for the relay part (consider this as a WIP). According to the documentation:
The container accepts RELAY_NETWORKS environment variable which MUST start with : e.g :192.168.0.0/24 or :192.168.0.0/24:10.0.0.0/16.
So I can add this back. As for the docs, saw you were updating them, decided to wait till it's done.
You can also use any generic SMTP server with authentication as smarthost. You need to set SMARTHOST_ADDRESS, SMARTHOST_PORT (connection parameters), SMARTHOST_USER, SMARTHOST_PASSWORD (authentication parameters), and SMARTHOST_ALIASES: this is a list of aliases to puth auth data for authentication, semicolon separated.
@terrillmoore Just added configuration variables in case you would want to test the relay feature.