Looks like some points are missing in the documentation

[spyesx]

Hi,

I'm trying to enable SMTP TLS on a Docker + Traefik/LetsEncrypt stack. I've set these 2 variables to true:

POSTFIX_SMTPD_TLS=true
POSTFIX_SMTP_TLS=true

However, I can't figure out the next steps and what to do with these variables:

POSTFIX_SMTPD_TLS_CERT_FILE
POSTFIX_SMTPD_TLS_KEY_FILE
POSTFIX_SMTP_TLS
POSTFIX_RELAYHOST
POSTFIX_RELAYHOST_AUTH_ENABLE
POSTFIX_RELAYHOST_USERNAME
POSTFIX_RELAYHOST_PASSWORD

Basically, all email received by Gmail are marked as "domain.tld did not encrypt this message" and they end up in SPAM.

1. Am I on the right track with Postfix TLS?
2. If yes, how to implement it?

[spyesx]

Answering my own question. I ended up using ldez/traefik-certs-dumper.

This project helps to get around this issue: traefik/traefik#2418

For those who need to support Consul, there is also this project: https://github.com/SvenDowideit/traefik-certdumper

That said, Postfix now uses the TLS certificate but all mails are still flagged as SPAM by Gmail. Even with strict DKIM, SPF and DMARC.

[crazy-max]

Sorry I missed your issue. Yes I use myself traefik cert dumper for this use case. I guess some documentation would be nice agree. Feel free to open a PR!

[spyesx]

I wasn't the only one working on update of the documentation and some examples: #55. This PR is on its way for approval. I'll let it here.