No Emails when deployed in docker

Community Support
1

Description

For testing RC as our future Chat System i installed the Version 7.7.1 - starter
on my local machine with deployment method “docker”.

Server Setup Information

  • Version of Rocket.Chat Server: 7.7.1 - starter
  • Operating System: Ubuntu
  • Deployment Method: docker
  • Number of Running Instances: 1
  • DB Replicaset Oplog:
  • NodeJS Version:
  • MongoDB Version:

Any additional Information

After setting up the SMTP values in the Admin Page. (see screenshot)
I cannot get any email message, neither from admin page nor from any other event.

I tested the SMTP connection from inside the docker network by setting up a node-service and ran this js code, this works fine:

const nodemailer = require("nodemailer");

// Create a test account or replace with real credentials.
const transporter = nodemailer.createTransport({
    host: "smtp.ionos.de",
    port: 587,
    secure: false, // true for 465, false for other ports
    auth: {
        user: "chatservice@schade-consulting.de",
        pass: "xxxxx",
    },
});

// Wrap in an async IIFE so we can use await.
(async () => {
    const info = await transporter.sendMail({
        from: "chatservice@schade-consulting.de",
        to: "schade.klaus@t-online.de",
        subject: "Hello Klaus",
        text: "Hello world and Klaus", // plain‑text body
        html: "<b>Hello world an Klaus</b>", // HTML body
    });

    console.log("Message sent:", info.messageId);
})();

image
image1072×1116 31.8 KB

Thanks for any advice
Klaus

2

What do your docker logs say?

You can enable debug logs as well.

Have you tried smtps as you are using 587?

3

Thank you very much for your quick response.

This is logged error with smtp:

Error: Mail command failed: 530 Authentication required
    at SMTPConnection._formatError (/app/bundle/programs/server/npm/node_modules/meteor/email/node_modules/nodemailer/lib/smtp-connection/index.js:790:19)
    at SMTPConnection._actionMAIL (/app/bundle/programs/server/npm/node_modules/meteor/email/node_modules/nodemailer/lib/smtp-connection/index.js:1594:34)
    at SMTPConnection.<anonymous> (/app/bundle/programs/server/npm/node_modules/meteor/email/node_modules/nodemailer/lib/smtp-connection/index.js:1063:18)
    at SMTPConnection._processResponse (/app/bundle/programs/server/npm/node_modules/meteor/email/node_modules/nodemailer/lib/smtp-connection/index.js:969:20)
    at SMTPConnection._onData (/app/bundle/programs/server/npm/node_modules/meteor/email/node_modules/nodemailer/lib/smtp-connection/index.js:755:14)
    at Socket.SMTPConnection._onSocketData (/app/bundle/programs/server/npm/node_modules/meteor/email/node_modules/nodemailer/lib/smtp-connection/index.js:193:44)
    at Socket.emit (node:events:518:28)
    at Socket.emit (node:domain:489:12)
    at addChunk (node:internal/streams/readable:561:12)
    at readableAddChunkPushByteMode (node:internal/streams/readable:512:3)
    at Socket.Readable.push (node:internal/streams/readable:392:5)
    at TCP.onStreamRead (node:internal/stream_base_commons:189:23)
    at TCP.callbackTrampoline (node:internal/async_hooks:130:17) {
  code: 'EENVELOPE',
  response: '530 Authentication required',
  responseCode: 530,
  command: 'MAIL FROM'
}

And this is the logged error with smtps

[Error: 48428357617F0000:error:0A00010B:SSL routines:ssl3_get_record:wrong version number:../deps/openssl/openssl/ssl/record/ssl3_record.c:354:
] {
  library: 'SSL routines',
  reason: 'wrong version number',
  code: 'ESOCKET',
  command: 'CONN'
}
4

The credentials are OK, as I checked it with the nodemailer request.

5

The node service is not the same as the Rocket service. So it isn’t a complete comparison.

That is your error. For whatever good reason.

As a matter of interest have you tested smtps/465 ?

I will ask if someone will take a look.

6

Hallo reetp,

this is a private message to topic https://forums.rocket.chat/t/no-emails-when-deployed-in-docker/22283/5

because it seems to be a bug which you should know at first.

After your answer I tried to change the port … but I cannot open the settings page any more (see image below).

1477×1420 97 KB

7

No this isn’t a private message… (And please don’t DM - I don’t answer).

What do your logs say??

8

Thank you for your help.

  1. There were no logs according to the missing admin-settings page, but after a server restart it was visible.
  2. After solving the issue 1) i could change the protokoll to “smtps” and port “465”. Then I got the emails, fine.
    My email provider seems to accept smtp and smtps and for ever good reason from within RC only smtps seems to work.
9

I suspect your provider doesn’t actually handle smtp for sending. Only smtps.

You’d need to check that.

Probably here.

Nothing there about unencrypted smtp.

Smtps/465 seems preferred. 587 still requires encrypted StartTls.

Your test script connection probably got upgraded without you realising, hence it isn’t a great test.

At least it is fixed!!