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

galligan (Matt Galligan) 1. Februar 2022 um 11:32 6

Ich habe jetzt das gleiche Problem, wenn ich versuche, Discourse SMTP so zu konfigurieren, dass es mit einer ImprovMX-E-Mail-Adresse funktioniert.

Irgendwelche Gedanken @supermathie?

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SMTP für Gruppe: SSL falsche Versionsnummer Fehler

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