I recently went through the emails:task and related code with the aim of testing each of the failure codepaths and touching up the error text. I also discovered that the effects of setting DISCOURSE_SMTP_ENABLE_START_TLS=false are (mostly) nil. Setting this didn’t actually disable STARTTLS and in f…

Is there anything I need to do on the forum you host? [Screenshot_20251105_151945_Firefox]

No, this alert shouldn’t show up on our hosting. We’ll fix it, thanks for the report as always.

[изображение] supermathie: Before I merge this though, I think an admin warning in the dashboard for when DISCOURSE_SMTP_ENABLE_STARTTLS=false is being set is suitable. @supermathie is this worth PMing every admin on every site that has this variable set? Our current problem checks system wil…

I think it is - I find it extremely likely that given how confused many admins are around email setup, someone has this variable set when they actually depend on starttls. Nobody should have it set, probably. Is rather have a spurious warning than silently break someone’s email setup. The alterna…

It would be nice if the warning didn’t show up when the outgoing SMTP server is the localhost (ie matches the Discourse domain name) as TLS between the Docker container and the host isn’t needed as they are the same machine.

Ich hatte in der aktuellen Version den Fall - das die auskommentierte Zeile (default ist true) zusammen mit force_tls den eMail Versand unterbunden hat. Ich habe sie also einkommentiert und sie auf false gesetzt. EMail Versand funktioniert nun - aber ich habe diese Meldung im Backend… Es hängt ein …

I also noticed this. After updating Discourse on 28 November, I started seeing mail delivery failures with the error message Job exception: :enable_starttls and :tls are mutually exclusive. Set :tls if you're on an SMTPS connection. Set :enable_starttls if you're on an SMTP connection and using STAR…

[изображение] josy38: together with force_tls prevented email sending It will be force_tls preventing email sending - this enforces TLS at connection time and is probably only suitable for port 465. [изображение] J5lx: But now I have to explicitly set DISCOURSE_SMTP_ENABLE_START_TLS to f…

Port 465 with ENABLE_START_TLS=false, FORCE_TLS=true and OPEN_TIMEOUT=10. That last one is due to strange timeout errors that I started seeing after a system update around three years ago, but I’ll eat my hat if that’s related to the issue described above. I had a look at the commit history in the …

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supermathie (Michael Brown) 11.Ноябрь.2025 14:32:05 9

In this case you should remove the variable from the environment.

Discourse will only use STARTTLS if it’s offered.

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Тема		Ответов	Просм.
SSL/TLS for port 465 (Net::ReadTimeout) - undocumented solution Self-hosting email	2	723	11.11.2025
SMTP error: Must issue a STARTTLS command first Self-hosting	9	3460	23.11.2021
Email not working (SSL_connect returned=1) Self-hosting	16	2592	15.07.2022
Can't send email with certificate issue Self-hosting	2	1561	02.04.2019
Discourse with other websites, SMTP issue: End of file reached Self-hosting	8	2372	22.10.2020

Переработка вывода задачи rake для тестирования писем

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