Change starting order/dependencies, add Healthchecks, expose only port 25 #49
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…t 25 Upstream documentation tells to start postfix first, then email-, then job-runner container. We add postgres as dependency to postfix, and add healthchecks so postfix waits until certificate files are ready, and postfix-dependencies will wait until postfix is started and responding MTAs only use port 25 to exchange mails. As connecting/authenticating users (via mail-client and ESMTP submission-protocol) is not a use-case for this project, we do not need port 587.
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Upstream documentation tells to start postfix first, then email-, then job-runner container.
We add postgres as dependency to postfix, and add healthchecks to cert-exporter and postfix. So postfix will not start until certificate files are ready, and postfix-dependencies will wait until postfix is started and responding.
MTAs only use port 25 to exchange mails. As connecting/authenticating users (via mail-client and ESMTP submission-protocol) is not a use-case for this project, we do not need port 587.