Hello, I’m trying to implement SMTP for groups but I keep getting the following error message. [image] Yet I’m using the same smtp server the instance uses and I get the same error message even if I use the same credentials specified in my app.yml file… I don’t understand why it’s behaving differ…

I suspect Discourse is attempting to connect to the SMTP server with TLS instead of STARTTLS. Can you screenshot the relevant settings? Please do redact specific hostnames and usernames but leave port information and other settings.

Configuration is rather classic : usual 587 port and starttls is true (default value) general configuration : [server] for group smtp : [group_smtp] I’ve been doing some tcpdump to see whats going on and I’m noticing 3 different behaviors. For the first two cases, it’s exactly as described i…

587 will support STARTTLS but not TLS (at connect time). We should amend the options here to allow STARTTLS. If you uncheck “Use SSL for SMTP” does it work?

Unfortunately, no it doesn’t work. unchecking “Use SSL for SMTP” gives me the following error message : [image] Which is strange because I know my credentials are correct. Looking with tcpdump, it behaves like I’ve explain for the “Discourse-doctor and rake” case. The exchanges between Discours…

I’m now having the same issue as I try to configure Discourse SMTP to work with an ImprovMX email address. [CleanShot 2022-02-01 at 06.30.49@2x] Any thoughts @supermathie ?

SMTP für Gruppe: SSL falsche Versionsnummer Fehler

Produktunterstützung Installation

supermathie (Michael Brown) 12. Dezember 2021 um 20:27 4

587 unterstützt STARTTLS, aber nicht TLS (zum Zeitpunkt der Verbindung).

Wir sollten die Optionen hier ändern, um STARTTLS zu erlauben.

Funktioniert es, wenn Sie “SSL für SMTP verwenden” deaktivieren?

Thema		Antworten	Aufrufe
SMTP error: Must issue a STARTTLS command first Self-hosting	9	3621	23. November 2021
SSL_connect SYSCALL on e-mail confirmation message Product Support	4	1307	15. Januar 2019
Yet other SMTP 587 port email various errors Self-hosting email	2	898	19. August 2024
Can't send email with certificate issue Self-hosting	2	1655	2. April 2019
Mail test failure in discourse-doctor Product Support email	17	666	13. März 2025

SMTP für Gruppe: SSL falsche Versionsnummer Fehler

Verwandte Themen