Environment Discourse: latest tests-passed Host OS: [Ubuntu 24.04 LTS / 24.04.3 LTS] Install method: official Docker install, running ./discourse-setup Platform: VPS (Digital Ocean) Steps to reproduce Run ./discourse-setup from /var/discourse Enter SMTP details when prompted: SMTP server: smtp.example.com SMTP port: 2525 SMTP username: user@example.com SMTP password: p@ssw0rd! Finish setup and inspect containers/app.yml Expected result app.yml should contain two distinct fields, for example: DISCOURSE_SMTP_USER_NAME: "user@example.com" DISCOURSE_SMTP_PASSWORD: "p@ssw0rd!" Actual result The password field is written with the username prepended: DISCOURSE_SMTP_USER_NAME: "user@example.com" DISCOURSE_SMTP_PASSWORD: "user@brevo.comp@ssw0rd!" This causes mail delivery to fail, and discourse-doctor confirms the mangled password. Notes • Quoting the password explicitly at the prompt does not change the outcome. • Password contains special characters (@, !), but the problem is not just YAML quoting: the username string is literally concatenated at the start of the password. • Reproducible across multiple runs of ./discourse-setup.

can you test if this relates to particularly letters in the password maybe @ / ! surface the bug? All the sed/awk and fancy bash scripting in discourse-setup do make it rather tricky to maintain. Perhaps @pfaffman has some ideas here?

Right. That’s a good bet. @Ethsim2 if you change the password to something with only numbers and letters and not the same as part of the username so you have this issue? Can you share the values you are using? I’ll try to take a look later today.

[画像] pfaffman: Can you share the values you are using? [image]

If you removed the 83f…com part of the password and just left the password (5AH…), does it work?

yes, then i run ./launcher rebuild app, since ./discourse-setup had already configured SWAP & created the app.yml

[画像] Ethsim2: Password contains special characters (@, !), but the problem is not just YAML quoting: the username string is literally concatenated at the start of the password. Yeah. That’s the issue. There are multiple levels of escaping that need to happen, like when bash reads the value, when bash hands the value to sed, when sed replaces it, and then, maybe, when the yml file gets it. It’s a known issue: [画像]Troubleshoot email on a new Discourse install The simplest way is to run ./discourse-setup again. Did you enter everything correctly? But wait! If your password has anything other than numbers and letters, you might be better off editing your app.yml with nano or your favorite editor. I recategorized this as #support.

[画像] Ethsim2: @ SMTP usernames always contain @ though, don’t they?

Yeah. I don’t think @ should cause a problem.

there’s no ! in my screenshot where the concatenation happens

What is the password you were trying to enter? (And presumably you’re using a different one now!)

./discourse-setup が SMTP ユーザー名を SMTP パスワードの先頭に配置する

製品サポート

Ethsim2 (Ethan ) 2025 年 9 月 15 日午前 10:15 4

トピック		返信	表示
Discourse-setup generates malformed YAML if password contains ':' Bug	1	1192	2016 年 6 月 4 日
Smtp password set during onboarding process Self-hosting	3	732	2021 年 4 月 25 日
DISCOURSE_SMTP_PASSWORD change failed Self-hosting	5	1341	2017 年 12 月 5 日
Troubleshoot email on a new Discourse install Self-Hosting email , configuring , how-to	36	185861	2026 年 4 月 27 日
Edit SMTP username Product Support	19	2926	2020 年 11 月 16 日

./discourse-setup が SMTP ユーザー名を SMTP パスワードの先頭に配置する

関連トピック