Postfix with Protonmail bridge for SMTP messages from docker
containers?
reddit / selfhosted

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jwu_gatech · 2023-10-10 06:08

As I understand, Protonmail* does not support SMTP without a business
account (and even then, not all such accounts). From research, a
possible workaround is to set up a mail relay with Postfix on the same
machine as Protonmail Bridge. I haven't been able to get this working
though, as I'm a bit new to mailservers and devops.

I have tried following [this
guide](https://www.romanbezlepkin.com/articles/protonmail-bridge-smtp-
relay) but sending a test message from localhost 25 did not work
(error opening sasl_password.db).

If anyone has guidance on how to set something like this up or helpful
documentation, please share.

* Why Protonmail? Vendor lock-in, already have custom domain setup and
such.

Some background since I'm new here: throughout grad-school I've been
self-hosting (plex,jitsi,jupyter,et al.) with no forethought. I now
have a mess of KVM's dockers, and even dockers within KVM's and no
reverse proxy. I'm looking to organize and  dockerize everything -
complete with SSO via Authentik.

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thekrautboy · 2023-10-10 06:44

Why not ask the author of the guide?