I have postfix configured to work on the local docker host such that a test via swaks --to destination@domain.tld --from admin@hostdomain.tld --server localhost -tls delivers as expected. It uses port 25 and sends out the email with no problem at all. So I’m lead to the question: how do I set up ap…

Just to document here, the following was sufficient (all other SMTP lines commented out) to deliver to the docker host’s smtp server if no auth is necessary: DISCOURSE_SMTP_ADDRESS: 172.17.0.1 DISCOURSE_SMTP_PORT: 25

So to be clear, are you saying only the IP should be configured and the other fields commented out? Eg: DISCOURSE_SMTP_ADDRESS: 127.0.0.1 #DISCOURSE_SMTP_PORT: 25 #DISCOURSE_SMTP_USER_NAME: #DISCOURSE_SMTP_PASSWORD: #DISCOURSE_SMTP_ENABLE_START_TLS: true # (optional, default tr…

If it’s on the same docker host but within a different docker container you need to specify the host IP. 127.0.0.1 won’t work as that’s the loopback address. Each container sees 127.0.0.1 as itself.

This is not in a different docker container, but simply on the docker host itself.

It’s still going to need the host IP then.

So in such a case you need to use the public IP or is thre a special IP scheme that Docker uses? For example, within the host I see docker0 with 172.17.0.1 and within the container (./launcher enter app; apt-get install ifconfig) eth0 is 172.17.0.2. I suspect I should use the host’s 172.17.0.1 w/in …

如何设置 SMTP 配置以使用 localhost？

支持

mreach (M. Reacher) 2019 年10 月 20 日 19:51 8

在此记录一下，如果无需认证，以下配置（注释掉所有其他 SMTP 行）足以将邮件投递到 Docker 主机的 SMTP 服务器：

  DISCOURSE_SMTP_ADDRESS: 172.17.0.1
  DISCOURSE_SMTP_PORT: 25

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如何设置 SMTP 配置以使用 localhost？

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